Roll Dart SDK from edd406c07399 to 20cca507d98b (1 revision)

https://dart.googlesource.com/sdk.git/+log/edd406c07399..20cca507d98b

2023-01-12 [email protected] Version 3.0.0-119.0.dev

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-sdk-flutter-engine
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter Engine: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

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': 'edd406c073997dad5a62289a09452c9ca3322a41',
+  'dart_revision': '20cca507d98b2df9ef1942c6396f7d33a8a3c6e4',
 
   # 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: 87ec9941a536e72407e3dc7fe9ab5f3f
+Signature: 6810c906925365d689dcb832f7e8c7a9
 
 ====================================================================================================
 LIBRARY: angle