Roll Dart SDK from 6f9810c8f7da to 8697e05f98df (2 revisions) (#27217)

DEPS

@@ -35,7 +35,7 @@ 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': '6f9810c8f7daba75fa28a4ceabc99dbead8fd17c',
+  'dart_revision': '8697e05f98dfbb9bdce7cfe4697ccb7e36b709d5',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py

ci/licenses_golden/licenses_third_party

-Signature: 21c7440c46d0f8ef6c6d20cd05ad7d03
+Signature: 17150deb5b82835ec01e32a8f77ad3fa
 
 UNUSED LICENSES: