Roll Tint from 7dbc4baa71 to edb644c821 (4 revisions)

https://dawn.googlesource.com/tint.git/+log/7dbc4baa7133..edb644c82152

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 jrprice@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/master/autoroll/README.md

Bug: None
Tbr: jrprice@google.com
Change-Id: Ic5612dbf6744244ecab68bc7ad78bbcca275c8a1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/53721
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@7dbc4baa71335c8b84ebe3c075af9f0e034f9b62',
+    'url': '{dawn_git}/tint@edb644c821521683581c65622c4410ef9b7da545',
   },
 
   # GLFW for tests and samples