Roll Tint from c03a09c106 to 67993b955e (1 revision)

https://dawn.googlesource.com/tint.git/+log/c03a09c10656..67993b955eea

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/tint-dawn
Please CC rharrison@google.com on the revert to ensure that a human
is aware of the problem.

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: rharrison@google.com
Change-Id: I268f104628a2390560a24041e2cba084fb3e2e6b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/56200
Reviewed-by: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -96,7 +96,7 @@ deps = {
 
   # WGSL support
   'third_party/tint': {
-    'url': '{dawn_git}/tint@c03a09c10656ae7d904b0d1af6173226c4dd7d85',
+    'url': '{dawn_git}/tint@67993b955eeae61e11a8f88808d3b7372d4a453a',
   },
 
   # GLFW for tests and samples