Roll Skia from c97ef71e0369 to 906b48689951 (2 revisions) (#192907)

https://skia.googlesource.com/skia.git/+log/c97ef71e0369..906b48689951

2026-09-16 skia-autoroll@skia-public.iam.gserviceaccount.com Roll
vulkan-deps from 0bd3b3284048 to 8287e26a21dc (8 revisions)
2026-09-16 ovsienko@google.com [vpython] Migrate .vpython3 to
vpython.toml (UV)

If this roll has caused a breakage, revert this CL and set the roller
to dry run mode using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC codefu@google.com,kjlubick@google.com,michaelludwig@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
diff --git a/DEPS b/DEPS
index d5a5de2..b2bf168 100644
--- a/DEPS
+++ b/DEPS
@@ -15,7 +15,7 @@
   'skia_git': 'https://skia.googlesource.com',
   'llvm_git': 'https://llvm.googlesource.com',
   'dart_ai_rev': '9c96bfe5f091c9451eff5b59c9bffeb2e806b875',
-  'skia_revision': 'c97ef71e03697aff4533cd369269f3ddef5bdb1b',
+  'skia_revision': '906b486899510f4e44b6dcf14afe83f8587d9943',
 
   # Do not download the Emscripten SDK by default.
   # This prevents us from downloading the Emscripten toolchain for builds