Roll SwiftShader from 9bfd96203d19 to 4a769cd69867 (5 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/9bfd96203d19..4a769cd69867

2022-12-13 swiftshader.regress@gmail.com Regres: Update test lists @ 29dc5eb3
2022-12-12 syoussefi@google.com Implement VK_KHR_surface/swapchain_maintenance1
2022-12-12 sugoi@google.com Float only writeColor
2022-12-12 syoussefi@google.com Update Vulkan headers to version 1.3.225
2022-12-12 sugoi@google.com Merge changes I6664b301,Iccccf7fd,I44bfc249,Ibd600b7e

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

To file a bug in SwiftShader: https://bugs.chromium.org/p/swiftshader/issues/entry
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

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

Bug: None
Tbr: bclayton@google.com
Change-Id: I19309df9d930d2ec611e2673dd00a3bf891f1732
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/113920
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -137,7 +137,7 @@ deps = {
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@9bfd96203d197dfe287aaac158dc5bf9a80a053e',
+    'url': '{swiftshader_git}/SwiftShader@4a769cd69867443a7b7336131a92f2fddfe26fc5',
     'condition': 'dawn_standalone',
   },