Roll Dart SDK from 481bdbc to 3e8633b (2 revisions) (#28083)

Author: skia-flutter-autoroll

DEPS

@@ -39,7 +39,7 @@ vars = {
   # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': '481bdbce9a92aa92b074b52c3816e690368370f7',
+  'dart_revision': '3e8633bcbf8ff5444f885b91052fa0606cdeb1a1',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -358,7 +358,7 @@ deps = {
    Var('dart_git') + '/package_config.git@fb736aa12316dd2d882b202a438a6946a4b4bea0',
 
   'src/third_party/dart/tools/sdks':
-   {'packages': [{'version': 'version:2.14.0-293.0.dev', 'package': 'dart/dart-sdk/${{platform}}'}], 'dep_type': 'cipd'},
+   {'packages': [{'version': 'version:2.14.0-377.4.beta', 'package': 'dart/dart-sdk/${{platform}}'}], 'dep_type': 'cipd'},
 
   # WARNING: end of dart dependencies list that is cleaned up automatically - see create_updated_flutter_deps.py.
 

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 8cbedd9744c59b2dcbba33f4bf7c356c
+Signature: c95b79bf3be8c6c4c733804fc04a057c
 
 UNUSED LICENSES: