Roll Skia from 2b3472da9888 to 306543797674 (5 revisions) (flutter#47610)

https://skia.googlesource.com/skia.git/+log/2b3472da9888..306543797674

2023-11-02 borenet@google.com [infra] Add alias for Go
2023-11-02 nicolettep@google.com [graphite] Small misc. comment doc fixes
2023-11-02 kjlubick@google.com Revert "Decouple SVG from SkFontMgr::RefDefault()"
2023-11-02 jvanverth@google.com [graphite] Simplify PerEdgeAAQuadRenderStep frag shader and varyings.
2023-11-02 johnstiles@google.com Treat non-side-effecting prefix expressions as trivial.

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 brianosman@google.com,herb@google.com,rmistry@google.com,zra@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: 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': '2b3472da9888e7dc8c3bb84068161e9ef28ea4e9',
+  'skia_revision': '30654379767492a4e72cd4564e5550aebdcef658',
 
   # WARNING: DO NOT EDIT canvaskit_cipd_instance MANUALLY
   # See `lib/web_ui/README.md` for how to roll CanvasKit to a new version.

ci/licenses_golden/licenses_skia

@@ -1,4 +1,4 @@
-Signature: 04249e503a3ff012210a57eddf1bb17d
+Signature: 12ec6bb16d4aadef07b4209282aabc07
 
 ====================================================================================================
 LIBRARY: etc1