Roll Dart SDK from 041a6dd2e76b to b9302efc8d9a (3 revisions) (#24764)

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': '041a6dd2e76ba9efeabe2c742536338479e1dd8a',
+  'dart_revision': 'b9302efc8d9a62c5333ebc547e0ebd668b70f586',
 
   # 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_third_party

-Signature: 11c187a0827dd36e29a89328d586f29a
+Signature: 7c75aab577f739cd38c11fdf9545f361
 
 UNUSED LICENSES:
 
@@ -11991,6 +11991,8 @@ LIBRARY: dart
 ORIGIN: ../../../third_party/dart/runtime/vm/compiler/ffi/range.h + ../../../third_party/dart/LICENSE
 TYPE: LicenseType.bsd
 FILE: ../../../third_party/dart/runtime/vm/compiler/ffi/range.h
+FILE: ../../../third_party/dart/runtime/vm/pending_deopts.cc
+FILE: ../../../third_party/dart/runtime/vm/pending_deopts.h
 FILE: ../../../third_party/dart/runtime/vm/virtual_memory_compressed.cc
 FILE: ../../../third_party/dart/runtime/vm/virtual_memory_compressed.h
 FILE: ../../../third_party/dart/samples/ffi/resource_management/utf8_helpers.dart