Roll vulkan-deps from 3f9a78474605 to 9449c7f77d1b (2 revisions)

https://chromium.googlesource.com/vulkan-deps.git/+log/3f9a78474605..9449c7f77d1b

Changed dependencies:
* spirv-headers: 70ff9d939c..34d04647d3
* vulkan-validation-layers: 2beda7f6bd..e4a4c1653c

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: I889d192c49de20ebf320d9f99fd71f2252c4469c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114642
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Kokoro: Kokoro <noreply+kokoro@google.com>

DEPS

@@ -142,7 +142,7 @@ deps = {
   },
 
   'third_party/vulkan-deps': {
-    'url': '{chromium_git}/vulkan-deps@3f9a78474605e24eb05a1f79cceabd5806028faf',
+    'url': '{chromium_git}/vulkan-deps@9449c7f77d1bc156c4e2584baef5870ef1eb8d4f',
     'condition': 'dawn_standalone',
   },