Roll src/third_party/dart 5b21a43c556c..1bab476834dc (41 commits) (#17219)

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': '5b21a43c556c55ee788aee4fdbd8563a7fe329ab',
+  'dart_revision': '1bab476834dcfc19707d373d0bcb5e0b17a7c665',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -88,7 +88,7 @@ vars = {
   'dart_shelf_web_socket_tag': '0.2.2+3',
   'dart_source_map_stack_trace_tag': '2.0.0',
   'dart_source_maps_tag': '8af7cc1a1c3a193c1fba5993ce22a546a319c40e',
-  'dart_source_span_tag': '1.5.5',
+  'dart_source_span_tag': '1.7.0',
   'dart_stack_trace_tag': '1.9.3',
   'dart_stagehand_tag': 'v3.3.7',
   'dart_stream_channel_tag': '2.0.0',
@@ -100,7 +100,7 @@ vars = {
   'dart_typed_data_tag': '1.1.6',
   'dart_usage_tag': '3.4.0',
   'dart_watcher_rev': '0.9.7+14',
-  'dart_web_socket_channel_tag': '1.0.9',
+  'dart_web_socket_channel_tag': '1.0.15',
   'dart_yaml_tag': '2.2.0',
 
   'ocmock_tag': 'v3.4.3',

ci/licenses_golden/licenses_third_party

-Signature: fe06cabd4e8412d069b983c21f83eeaf
+Signature: bb7475da375e6d3d09b02525bab95d8b
 
 UNUSED LICENSES: