Roll Dart SDK from 7e5fe50b244c to 1046888b1bf9 (5 revisions) (#19084)

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': '7e5fe50b244cd94851551ef04dea6d5d5261002d',
+  'dart_revision': '1046888b1bf9adf61c0c3e8929d2d29cc6c8dd83',
 
   # 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: d96701facd9be743b4c4d9718779e2aa
+Signature: 42713ca6f6e94962450f22c2d5a19433
 
 UNUSED LICENSES: