Roll Dart SDK from 0f0e04ec3afa to 987c9e347ca4 (5 revisions) (#20210)

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': '0f0e04ec3afaa8265b8ec9e5d3e579c0a0c6c9d0',
+  'dart_revision': '987c9e347ca4e4fce5926b629b929f925a39dee8',
 
   # 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: 1cbd9ba9c5b8d6409ac5c2f40f0591a4
+Signature: 19c413fe12e2810a885f220efafff288
 
 UNUSED LICENSES: