Roll SPIRV-Tools from f8eafd4d838c to 0c21e50922e4 (2 revisions)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/f8eafd4d838c..0c21e50922e4

2021-06-22 dnovillo@google.com Start SPIRV-Tools v2021.3
2021-06-22 dnovillo@google.com Finalize SPIRV-Tools v2021.2

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/spirv-tools-vulkan-deps-autoroll
Please CC radial-bots+chrome-roll@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

Tbr: radial-bots+chrome-roll@google.com
Change-Id: I13b77bb62db0b43390243f4146f0d6bea2a45106
Reviewed-on: https://chromium-review.googlesource.com/c/vulkan-deps/+/2978769
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>

• DEPS[diff]