Bump json_serializable from 6.6.0 to 6.6.1 in /auto_submit (#2447)

Bumps [json_serializable](https://github.com/google/json_serializable.dart) from 6.6.0 to 6.6.1.
- [Release notes](https://github.com/google/json_serializable.dart/releases)
- [Commits](https://github.com/google/json_serializable.dart/compare/json_serializable-v6.6.0...json_serializable-v6.6.1)

---
updated-dependencies:
- dependency-name: json_serializable
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/auto_submit/pubspec.lock b/auto_submit/pubspec.lock
index a760e21..bfe1e1c 100644
--- a/auto_submit/pubspec.lock
+++ b/auto_submit/pubspec.lock
@@ -378,7 +378,7 @@
       name: json_serializable
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.6.0"
+    version: "6.6.1"
   lints:
     dependency: transitive
     description:
diff --git a/auto_submit/pubspec.yaml b/auto_submit/pubspec.yaml
index c2dc199..2da9a37 100644
--- a/auto_submit/pubspec.yaml
+++ b/auto_submit/pubspec.yaml
@@ -30,7 +30,7 @@
 
 dev_dependencies:
   build_runner: ^2.3.3
-  json_serializable: ^6.6.0
+  json_serializable: ^6.6.1
   flutter_lints: ^2.0.1
   mockito: ^5.3.2
   test: ^1.22.2