Roll Skia from a4f8f5177c8b to 211d63b1e1f5 (2 revisions) (flutter/engine#45724)

https://skia.googlesource.com/skia.git/+log/a4f8f5177c8b..211d63b1e1f5

2023-09-12 brianosman@google.com Add basic support for kRGBA_10x6_SkColorType
2023-09-12 michaelludwig@google.com Use over-sampling to avoid branches in 2D blur effect

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 bdero@google.com,brianosman@google.com,jmbetancourt@google.com,rmistry@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://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

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': 'a4f8f5177c8b14f8a7ed3b6857b13509649eaf94',
+  'skia_revision': '211d63b1e1f5271c62429756fc098d6d3f29f067',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

engine/src/flutter/ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 970fdf70ba253a7a0cb72f11656de999
+Signature: 04eabdcfc5d1419543a85643fda5a077
 
 ====================================================================================================
 LIBRARY: etc1