Roll Skia from 61169c1f6f7c to 8689a1169a32 (2 revisions) (flutter#174343)

https://skia.googlesource.com/skia.git/+log/61169c1f6f7c..8689a1169a32

2025-08-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 7ac7122db4db to ca735e09cecf (1 revision)
2025-08-24 skia-recreate-skps@skia-swarming-bots.iam.gserviceaccount.com
Update SKP version

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC jimgraham@google.com,kjlubick@google.com,nicolettep@google.com
on the revert to ensure that a human
is aware of the problem.

To file a bug in Skia: https://bugs.chromium.org/p/skia/issues/entry
To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Author: engine-flutter-autoroll

DEPS

@@ -14,7 +14,7 @@ vars = {
   'flutter_git': 'https://flutter.googlesource.com',
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
-  'skia_revision': '61169c1f6f7c1d4d192e72a5f6019c9f63d1bffc',
+  'skia_revision': '8689a1169a320558c3d76d7a6e9f87b8aab60d04',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.