Roll vulkan-deps from fccfa1b2700f to 6a7765101421 (1 revision)

https://chromium.googlesource.com/vulkan-deps.git/+log/fccfa1b2700f..6a7765101421

Changed dependencies:
* vulkan-validation-layers: c8ef821342..9139876c5b

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,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: bclayton@google.com
Change-Id: Ibc7c2c40e65ee38ed7877c4587cc31e648ecec64
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/124700
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -142,7 +142,7 @@ deps = {
   },
 
   'third_party/vulkan-deps': {
-    'url': '{chromium_git}/vulkan-deps@fccfa1b2700fe68df9f4216153030caff61d32c0',
+    'url': '{chromium_git}/vulkan-deps@6a776510142179da36e91faaa3d4e766bf6bac10',
     'condition': 'dawn_standalone',
   },