Roll Dart SDK from 2553a84fe438 to 95e1709c9e54 (1 revision) (flutter#23029)

Author: skia-flutter-autoroll

DEPS

@@ -34,7 +34,7 @@ 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': '2553a84fe438d12bd5d36ab2ae059f593d9804ac',
+  'dart_revision': '95e1709c9e54127a59be4c4b3ebeaa48a3e4067f',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py