Roll Dart SDK from 2e05e6c94a05 to 3844e74adbcc (13 revisions) (#19824)

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': '2e05e6c94a05a34fb56e609c7498a75c340d2e2a',
+  'dart_revision': '3844e74adbcc55a933180aef9bb4408c3b851cfa',
 
   # 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: e12a2d6fb4d4ca371c0ec70b507e3734
+Signature: 5b5c96eadfee18d87c4427f9dfa03ec0
 
 UNUSED LICENSES: