Roll Dart SDK from 0ed6ae6d709e to ddbeaabe8b3d (1 revision) (#21542)

diff --git a/DEPS b/DEPS
index a52cb91..f8f0f91 100644
--- a/DEPS
+++ b/DEPS
@@ -34,7 +34,7 @@
   # 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': '0ed6ae6d709e545ff691910494d45892a8b31e7b',
+  'dart_revision': 'ddbeaabe8b3dc6299d9c963d414f820198edf8cd',
 
   # 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 e2e5d88..0278bb4 100644
--- a/ci/licenses_golden/licenses_third_party
+++ b/ci/licenses_golden/licenses_third_party
@@ -1,4 +1,4 @@
-Signature: 385523a088629e27bbf89457373ff6ab
+Signature: f7f2dde13633b0c56c6d8b79c881dace
 
 UNUSED LICENSES: