Roll SPIRV-Tools from 8f9381775c4c to 6ce1be1dab31 (1 revision)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/8f9381775c4c..6ce1be1dab31

2025-11-01 jbolz@nvidia.com Validate SPV_EXT_shader_64bit_indexing (#6376)

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 angle-team@google.com,radial-bots+chrome-roll@google.com,radial-bots@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://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Tbr: radial-bots+chrome-roll@google.com
Change-Id: I9e24b7336a04ca9bf75ce65239b2627da282d4fb
Reviewed-on: https://chromium-review.googlesource.com/c/vulkan-deps/+/7108620
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>