Roll vulkan-deps from cea6d951c56b to a7b8bd76ed0c (2 revisions)

https://chromium.googlesource.com/vulkan-deps.git/+log/cea6d951c56b..a7b8bd76ed0c

Changed dependencies:
* vulkan-validation-layers: 4e1a8ff667..56e3ebda22

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/vulkan-deps-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 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: Ic8c3f5afcbc4ca747f1b472c394c24cd85074256
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114320
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

@@ -142,7 +142,7 @@ deps = {
   },
 
   'third_party/vulkan-deps': {
-    'url': '{chromium_git}/vulkan-deps@cea6d951c56b2a61ce3cede9a0ce68e1cc61e54f',
+    'url': '{chromium_git}/vulkan-deps@a7b8bd76ed0c833a79132475105eb9ef37d6beff',
     'condition': 'dawn_standalone',
   },