Roll Dart SDK from 7c749713c688 to 7c3588c05f87 (1 revision) (#46288)

https://dart.googlesource.com/sdk.git/+log/7c749713c688..7c3588c05f87

2023-09-26 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com Version 3.2.0-199.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC dart-vm-team@google.com,jonahwilliams@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter Engine: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
diff --git a/DEPS b/DEPS
index 1954d46..8ed24ba 100644
--- a/DEPS
+++ b/DEPS
@@ -57,7 +57,7 @@
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '7c749713c688408d8fee9a58ca6c9c6fbf476f37',
+  'dart_revision': '7c3588c05f87f44ed6795b2e13457193f14dae4e',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
diff --git a/ci/licenses_golden/licenses_dart b/ci/licenses_golden/licenses_dart
index f32695a..a22502d 100644
--- a/ci/licenses_golden/licenses_dart
+++ b/ci/licenses_golden/licenses_dart
@@ -1,4 +1,4 @@
-Signature: 9da25dd6e83eac28bed2aca3c9542f56
+Signature: 601fdb9dd42612ba699cbf0563a3c257
 
 ====================================================================================================
 LIBRARY: dart