Roll Dart SDK from b2b5788a1284 to aece9de7bda6 (1 revision) (flutter#33092)

Author: skia-flutter-autoroll

DEPS

@@ -45,7 +45,7 @@ vars = {
   # 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': 'b2b5788a1284e6dd59a4a947b1abce48bceb8991',
+  'dart_revision': 'aece9de7bda6ef7c56ac15180c7f8970cbe6376a',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py