Roll SPIRV-Tools from 393d5c7df150 to 8a6aaa696c26 (1 revision)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/393d5c7df150..8a6aaa696c26

2025-03-28 41898282+github-actions[bot]@users.noreply.github.com roll deps (#6069)

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: Ia69f11fb4bd4acc91308a9fd75d301851cc5c3cf
Reviewed-on: https://chromium-review.googlesource.com/c/vulkan-deps/+/6409547
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>

• DEPS[diff]
• spirv-tools/src[diff]