Roll SwiftShader from 4e401427f8dd to 4a260c12b8c1 (1 revision)

https://swiftshader.googlesource.com/SwiftShader.git/+log/4e401427f8dd..4a260c12b8c1

2023-07-20 avi@google.com Don't allow Swiftshader to be compiled as ARC

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 lokokung@google.com,webgpu-developers@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: lokokung@google.com
Change-Id: Ie98d94bf353d327ecf1eb516bd7e8e3c755e73b1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/142243
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 09362ad..a0a3d21 100644
--- a/DEPS
+++ b/DEPS
@@ -153,7 +153,7 @@
   },
 
   'third_party/swiftshader': {
-    'url': '{swiftshader_git}/SwiftShader@4e401427f8dd799b17ac6c805391e2da1e017672',
+    'url': '{swiftshader_git}/SwiftShader@4a260c12b8c155103435a7b2b99b5227f6ce7594',
     'condition': 'dawn_standalone',
   },