Roll Dart SDK from 8234f00e521a to 54c79f559d23 (2 revisions) (flutter#27079)

Author: skia-flutter-autoroll

DEPS

@@ -35,7 +35,7 @@ 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': '8234f00e521aaa9eae9f431654e1d00fd3e8b506',
+  'dart_revision': '54c79f559d232e65e4110e69f3c862e9592e90de',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -175,7 +175,7 @@ deps = {
    Var('dart_git') + '/args.git@d8fea36c10ef96797be02e3d132d572445cd86f4',
 
   'src/third_party/dart/third_party/pkg/async':
-   Var('dart_git') + '/async.git@b8850b3851026676083413c67fa0a22f63a8edbc',
+   Var('dart_git') + '/async.git@92e7119aa068bfb86a6a9519d44037ffff5eece8',
 
   'src/third_party/dart/third_party/pkg/bazel_worker':
    Var('dart_git') + '/bazel_worker.git@0885637b037979afbf5bcd05fd748b309fd669c0',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 45b572ff27427bd4468cd0850225f6fb
+Signature: fac1e66d172b489af0254ce479804b38
 
 UNUSED LICENSES: