Roll Dart SDK from 1b1b0743b421 to 55c93c732da9 (2 revisions) (#31315)

diff --git a/DEPS b/DEPS
index 035cff0..0f6513a 100644
--- a/DEPS
+++ b/DEPS
@@ -39,7 +39,7 @@
   # 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': '1b1b0743b4210d1da08399942a6a5dcc6a410f31',
+  'dart_revision': '55c93c732da9eb3fcfd1c4dfa6e268b3263382e3',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
diff --git a/ci/licenses_golden/licenses_third_party b/ci/licenses_golden/licenses_third_party
index d185177..552189f 100644
--- a/ci/licenses_golden/licenses_third_party
+++ b/ci/licenses_golden/licenses_third_party
@@ -1,4 +1,4 @@
-Signature: eed8b68ffef18cc4f6103756f44f7abf
+Signature: b10118afbb14d001048593fecf2e3d1a
 
 UNUSED LICENSES:
 
@@ -10084,6 +10084,7 @@
 FILE: ../../../third_party/dart/benchmarks/Iterators/dart2/Iterators.dart
 FILE: ../../../third_party/dart/sdk/lib/_internal/vm/lib/hash_factories.dart
 FILE: ../../../third_party/dart/sdk/lib/ffi/c_type.dart
+FILE: ../../../third_party/dart/sdk/lib/ffi/native_finalizer.dart
 ----------------------------------------------------------------------------------------------------
 Copyright (c) 2022, the Dart project authors.  Please see the AUTHORS file
 for details. All rights reserved.