build(deps): bump actions/checkout in the github-actions group (#694)

Bumps the github-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 5.0.0 to 6.0.0
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/08c6903cd8c0fde910a37f88322edcfb5dd907a8...1af3b93b6815bc44a9784bd300feb67ff0d1eeb3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/.github/workflows/dart.yml b/.github/workflows/dart.yml
index d1745db..af35b1d 100644
--- a/.github/workflows/dart.yml
+++ b/.github/workflows/dart.yml
@@ -34,7 +34,7 @@
           sdk: stable
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - name: mono_repo self validate
         run: dart pub global activate mono_repo 6.6.3
       - name: mono_repo self validate
@@ -59,7 +59,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: _test_pub_upgrade
         name: _test; dart pub upgrade
         run: dart pub upgrade
@@ -161,7 +161,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: _test_pub_upgrade
         name: _test; dart pub upgrade
         run: dart pub upgrade
@@ -299,7 +299,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: _test_package_pub_upgrade
         name: _test_package; dart pub upgrade
         run: dart pub upgrade
@@ -333,7 +333,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: discoveryapis_commons_pub_upgrade
         name: discoveryapis_commons; dart pub upgrade
         run: dart pub upgrade
@@ -367,7 +367,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: discoveryapis_generator_pub_upgrade
         name: discoveryapis_generator; dart pub upgrade
         run: dart pub upgrade
@@ -401,7 +401,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: generated_googleapis_pub_upgrade
         name: generated/googleapis; dart pub upgrade
         run: dart pub upgrade
@@ -435,7 +435,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: generated_googleapis_beta_pub_upgrade
         name: generated/googleapis_beta; dart pub upgrade
         run: dart pub upgrade
@@ -469,7 +469,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: googleapis_auth_pub_upgrade
         name: googleapis_auth; dart pub upgrade
         run: dart pub upgrade
@@ -503,7 +503,7 @@
           sdk: "3.7.0"
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: googleapis_auth_pub_upgrade
         name: googleapis_auth; dart pub upgrade
         run: dart pub upgrade
@@ -537,7 +537,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: _test_package_pub_upgrade
         name: _test_package; dart pub upgrade
         run: dart pub upgrade
@@ -571,7 +571,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: discoveryapis_commons_pub_upgrade
         name: discoveryapis_commons; dart pub upgrade
         run: dart pub upgrade
@@ -605,7 +605,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: discoveryapis_generator_pub_upgrade
         name: discoveryapis_generator; dart pub upgrade
         run: dart pub upgrade
@@ -639,7 +639,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: generated_googleapis_pub_upgrade
         name: generated/googleapis; dart pub upgrade
         run: dart pub upgrade
@@ -673,7 +673,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: generated_googleapis_beta_pub_upgrade
         name: generated/googleapis_beta; dart pub upgrade
         run: dart pub upgrade
@@ -707,7 +707,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: googleapis_auth_pub_upgrade
         name: googleapis_auth; dart pub upgrade
         run: dart pub upgrade
@@ -741,7 +741,7 @@
           sdk: dev
       - id: checkout
         name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
       - id: googleapis_auth_pub_upgrade
         name: googleapis_auth; dart pub upgrade
         run: dart pub upgrade
diff --git a/.github/workflows/verify_examples.yml b/.github/workflows/verify_examples.yml
index 1e88055..51f9111 100644
--- a/.github/workflows/verify_examples.yml
+++ b/.github/workflows/verify_examples.yml
@@ -29,7 +29,7 @@
     - uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c
       with:
         sdk: dev
-    - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8
+    - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3
     - run: |
         pushd discoveryapis_generator
         dart pub upgrade