Roll src/third_party/dart 08bad91aa3a5..674af7e93f56 (2 commits) (#18471)

diff --git a/DEPS b/DEPS
index d3454bf..b9fa761 100644
--- a/DEPS
+++ b/DEPS
@@ -34,7 +34,7 @@
   # 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': '08bad91aa3a5e3edf6004fe690f4ee6eaf33fe81',
+  'dart_revision': '674af7e93f56bbd88b59444022f0b35c2a29258d',
 
   # WARNING: DO NOT EDIT MANUALLY
   # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py
diff --git a/ci/licenses_golden/licenses_third_party b/ci/licenses_golden/licenses_third_party
index 14748d4..e3fdbb4 100644
--- a/ci/licenses_golden/licenses_third_party
+++ b/ci/licenses_golden/licenses_third_party
@@ -1,4 +1,4 @@
-Signature: a6ad297b14083f3fc821071c6bd46d3b
+Signature: a9e8e6302ba65cca893d8770ca67d572
 
 UNUSED LICENSES: