Roll Dart SDK from 29cf7ad69286 to 512513bc574f (1 revision) (flutter#40018)

Roll Dart SDK from 29cf7ad69286 to 512513bc574f (1 revision)

Author: skia-flutter-autoroll

DEPS

@@ -48,7 +48,7 @@ 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': '29cf7ad692865bc0e3540e1dc4fd56a6831b4c80',
+  'dart_revision': '512513bc574f0136afb8df5d5707780d3e8f5747',
 
   # 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

@@ -1,4 +1,4 @@
-Signature: 30185220db4b4f46abc35d0937238aeb
+Signature: 3feccd13ac097176c4f3f0454625899a
 
 ====================================================================================================
 LIBRARY: angle