Roll Tint from 5bdece5583 to 70c8a96cd8 (1 revision)

https://dawn.googlesource.com/tint.git/+log/5bdece558342..70c8a96cd809

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 cwallez@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: cwallez@google.com
Change-Id: Ifbfc0a9c912a2384c0a77d8b820399578c388a22
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/49307
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@5bdece558342cb2543ac03c6600c86a2f16a267d',
+    'url': '{dawn_git}/tint@70c8a96cd809254e5744fd17825d3fa212b1b0e5',
   },
 
   # GLFW for tests and samples