Roll Dart SDK from ff5e3bd6501e to 7581556591c0 (1 revision) (#36654)

diff --git a/DEPS b/DEPS
index a476895..7e6d80b 100644
--- a/DEPS
+++ b/DEPS
@@ -43,7 +43,7 @@
   # Dart is: https://github.com/dart-lang/sdk/blob/main/DEPS.
   # You can use //tools/dart/create_updated_flutter_deps.py to produce
   # updated revision list of existing dependencies.
-  'dart_revision': 'ff5e3bd6501e799f9a68ff05959bffe2ce4852e7',
+  'dart_revision': '7581556591c087d06fd82c9fe9e7913d8c6576d9',
 
   # 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 6723292..95a31dd 100644
--- a/ci/licenses_golden/licenses_third_party
+++ b/ci/licenses_golden/licenses_third_party
@@ -1,4 +1,4 @@
-Signature: 6c3fef961e4dee0dd67659c88e478c92
+Signature: 4c7c9ba999db125754275eb37a48c272
 
 UNUSED LICENSES: