Roll Dart SDK from 7e72c9ae7ef1 to 9fcac032b669 (12 revisions) (flutter#19175)

Author: skia-flutter-autoroll

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': '7e72c9ae7ef128a28a9e9eb8bd3c46d955602999',
+  'dart_revision': '9fcac032b669a772050fea629acf9732d0d80a7b',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -64,7 +64,7 @@ vars = {
   'dart_shelf_web_socket_tag': '0.2.2+3',
   'dart_source_map_stack_trace_tag': '2.0.0',
   'dart_source_span_tag': '1.7.0',
-  'dart_stack_trace_tag': '1.9.3',
+  'dart_stack_trace_tag': '07569831f17844ef90214a179db211954a7f7324',
   'dart_stagehand_tag': 'v3.3.7',
   'dart_stream_channel_tag': '70433d577be02c48cb16d72d65654f3b4d82c6ed',
   'dart_test_reflective_loader_tag': '0.1.9',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: a452e488ba57050ad48837af342a2527
+Signature: 373a1ce95e3235f255bd904c4e32e9e8
 
 UNUSED LICENSES: