Roll Dart SDK from cf2d9652297b to add161c68e6d (1 revision) (#49390)

https://dart.googlesource.com/sdk.git/+log/cf2d9652297b..add161c68e6d

2023-12-26 [email protected] Version 3.3.0-261.0.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://issues.skia.org/issues/new?component=1389291&template=1850622

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

Author: skia-flutter-autoroll

DEPS

@@ -66,7 +66,7 @@ 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': 'cf2d9652297b7190cdf0296ecb501c9d2caca7c5',
+  'dart_revision': 'add161c68e6debf0962d32e6e19217274d76546f',
 
   # 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_dart

@@ -1,4 +1,4 @@
-Signature: e937f82958260f5cc5286f161251dc64
+Signature: 40d3b3aee0a77ef6430fe07ce73ebd67
 
 ====================================================================================================
 LIBRARY: dart
@@ -4707,7 +4707,7 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
 
-You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/cf2d9652297b7190cdf0296ecb501c9d2caca7c5
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/add161c68e6debf0962d32e6e19217274d76546f
 /third_party/fallback_root_certificates/
 
 ====================================================================================================

sky/packages/sky_engine/LICENSE

@@ -31145,7 +31145,7 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
 
-You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/cf2d9652297b7190cdf0296ecb501c9d2caca7c5
+You may obtain a copy of this library's Source Code Form from: https://dart.googlesource.com/sdk/+/add161c68e6debf0962d32e6e19217274d76546f
 /third_party/fallback_root_certificates/
 
 --------------------------------------------------------------------------------