Roll Dart SDK from cb29cb6d1d0f to 853eff8b0faa (2 revisions)

https://dart.googlesource.com/sdk.git/+log/cb29cb6d1d0f..853eff8b0faa

2023-01-07 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com Version 3.0.0-99.0.dev
2023-01-06 dart-internal-merge@dart-ci-internal.iam.gserviceaccount.com Version 3.0.0-98.0.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 dart-vm-team@google.com,jimgraham@google.com 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': 'cb29cb6d1d0fc5ca7b91dcc5820a98e47df697cf',
+  'dart_revision': '853eff8b0faac54cf53beabd420fe7f6652c69aa',
 
   # 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: 55c61d7d977265741053d3a5c7c4264c
+Signature: b497e083b39b2e2f1d55ea53c1cbef39
 
 ====================================================================================================
 LIBRARY: angle