Roll Dart SDK from c92eaef473e8 to 1bc14509ed5a (1 revision) (flutter#34958)

Author: skia-flutter-autoroll

DEPS

@@ -36,7 +36,7 @@ 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': 'c92eaef473e8c823c9fc4a9f9f94c434ec250593',
+  'dart_revision': '1bc14509ed5abe036c6f7728236286d9237b5d08',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -272,7 +272,7 @@ deps = {
    Var('dart_git') + '/pub_semver.git@5c0b4bfd5ca57fe16f1319c581dc8c882e9b8cb2',
 
   'src/third_party/dart/third_party/pkg/shelf':
-   Var('dart_git') + '/shelf.git@9dab94469d50e89a6e4e2c0086b717bddb0bf78a',
+   Var('dart_git') + '/shelf.git@0371a64bd3b99044ee3158bacf8813bba735a9c7',
 
   'src/third_party/dart/third_party/pkg/source_map_stack_trace':
    Var('dart_git') + '/source_map_stack_trace.git@72dbf21a33293b2b8434d0a9751e36f9463981ac',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 27596e209057866d3633a1d4c3999f19
+Signature: 136bf5841182538c6f6c56f151785c84
 
 UNUSED LICENSES: