Roll vulkan-deps from a43d9b56a12c to a6e68d7ed2e8 (1 revision)

https://chromium.googlesource.com/vulkan-deps.git/+log/a43d9b56a12c..a6e68d7ed2e8

Changed dependencies:
* vulkan-validation-layers: f95138a9a2..ddd3f7ee9d

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 cwallez@google.com,webgpu-developers@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: cwallez@google.com
Change-Id: Ib22aac289a2f0bd9bb7a239a4e7c1c6d51f477ea
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/127349
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.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@a43d9b56a12cac8e140fcdb9207013fdb0110fbd',
+    'url': '{chromium_git}/vulkan-deps@a6e68d7ed2e8075acbcfbf40daca6faf37a2ecad',
     'condition': 'dawn_standalone',
   },