Roll Skia from 721da68f52e0 to a1f186aca73a (1 revision) (#36318)

Author: skia-flutter-autoroll

DEPS

@@ -18,7 +18,7 @@ vars = {
   'llvm_git': 'https://llvm.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '721da68f52e0b948f8b56a4a8020977a533b1b49',
+  'skia_revision': 'a1f186aca73a58ad2c3b79975df7480e13d37c24',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.