Roll Dart SDK from 712e35f7fd0b to 06536d68ca0f (2 revisions) (#21736)

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': '712e35f7fd0b335babe651b84d0f1db080f78a04',
+  'dart_revision': '06536d68ca0f27528b0bf729f4b8d673ed14beda',
 
   # 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: e27db4e6a2cdaf30c289042328766087
+Signature: e1e238bf83ff046e90191a5521ba595f
 
 UNUSED LICENSES: