Roll Dart SDK from 1785f6e to 1bd0738 (1 revision) (#37160)

Author: skia-flutter-autoroll

DEPS

@@ -48,7 +48,7 @@ vars = {
   # 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': '1785f6ecbf01e9e60382f2012f34d794ecfa55f9',
+  'dart_revision': '1bd0738499d4f839d3d9434afeb087d42fa6ed8a',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py