Roll SPIRV-Headers from 39e5d40a3259 to 6dd7ba990830 (1 revision)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git/+log/39e5d40a3259..6dd7ba990830

2026-03-30 r.potter@samsung.com Add SPV_KHR_constant_data (#574)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/spirv-headers-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: If52dc12c10efe7cfcffec2f37242ab4ab385e1f1
Reviewed-on: https://chromium-review.googlesource.com/c/vulkan-deps/+/7712836
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>