Roll third_party/webgpu-cts/ 1967655f4..815ff2bb4 (4 commits)

Regenerated:
 - expectations.txt
 - compat-expectations.txt
 - ts_sources.txt
 - test_list.txt
 - resource_files.txt
 - webtest .html files


https://chromium.googlesource.com/external/github.com/gpuweb/cts/+log/1967655f484b..815ff2bb4038
 - 815ff2 Allow for trailing comma in var template declaration (#3959)
 - a95f64 Add the largest float representable as integer (signed/unsigned) to F32 testing (execution) set (#3942)
 - 99ea6f wgsl: test reservation of 'noncoherent' and 'non_coherent' (#3957)
 - 9387aa Add validation tests on the limit of max vertex output location with clip_distances (#3958)

Created with './tools/run cts roll'

Change-Id: I53bde39a7e11192bc4bb636d3dd72e0591ef622c
Cq-Include-Trybots: luci.chromium.try:android-dawn-arm-rel,android-dawn-arm64-rel,dawn-try-linux-x64-intel-uhd770-rel,dawn-try-mac-amd-exp,dawn-try-mac-arm64-m2-exp,dawn-try-mac-intel-exp,dawn-try-win-x64-intel-uhd770-rel,dawn-try-win10-x86-rel,linux-dawn-nvidia-1660-exp-rel,linux-dawn-rel,mac-arm64-dawn-rel,mac-dawn-rel,win-dawn-rel
Include-Ci-Only-Tests: true
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/207814
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
diff --git a/DEPS b/DEPS
index 1dea097..49276f1 100644
--- a/DEPS
+++ b/DEPS
@@ -361,7 +361,7 @@
 
   # WebGPU CTS - not used directly by Dawn, only transitively by Chromium.
   'third_party/webgpu-cts': {
-    'url': '{chromium_git}/external/github.com/gpuweb/cts@1967655f484bfcd49e61946b0a7d3fae83191dac',
+    'url': '{chromium_git}/external/github.com/gpuweb/cts@815ff2bb4038144dea89c33021bc4429f22a130f',
     'condition': 'build_with_chromium',
   },