Roll Dart SDK from 904ca10 to 6d30f47 (2 revisions) (#28591)

Author: skia-flutter-autoroll

DEPS

@@ -39,7 +39,7 @@ 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': '904ca10d48a7b7e4256fc1c28e6790ddd50463d1',
+  'dart_revision': '6d30f47da59b0e36949d24e99ddcbcaf37c8b240',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
@@ -52,7 +52,7 @@ vars = {
   'dart_intl_tag': '0.17.0-nullsafety',
   'dart_linter_tag': '1.11.0',
   'dart_protobuf_rev': 'c1eb6cb51af39ccbaa1a8e19349546586a5c8e31',
-  'dart_pub_rev': 'cd7a43f2109f7e5eb22e73c7f4e15d25fd57598e',
+  'dart_pub_rev': 'd95c5713dda518ed53ada70e00789e6aadbfbe48',
   'dart_resource_rev': '6b79867d0becf5395e5819a75720963b8298e9a7',
   'dart_root_certificates_rev': '692f6d6488af68e0121317a9c2c9eb393eb0ee50',
   'dart_shelf_proxy_tag': 'v1.0.0',

ci/licenses_golden/licenses_third_party

@@ -1,4 +1,4 @@
-Signature: 2e7eecc863740ec49efdbdadea7f3970
+Signature: c354759b69c31e2e3f0accd857511df2
 
 UNUSED LICENSES: