Roll DirectX Shader Compiler from 9bfbee6c44de to 88fcc1b031e1 (4 revisions)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/9bfbee6c44de..88fcc1b031e1

2024-09-25 brioche@google.com [SPIR-V] Fix build with -DENABLE_SPIRV_CODEGEN=OFF (#6933)
2024-09-25 amaiorano@google.com Fix assertion on splat of groupshared scalar (#6930)
2024-09-24 cbeckley@google.com Update deps for release (#6929)
2024-09-20 brioche@google.com [SPIR-V] Add -fvk-bind-*-heap flag to DXC (#6919)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/directx-shader-compiler-dawn
Please CC jrprice@google.com,webgpu-developers@google.com on the revert to ensure that a human
is aware of the problem.

To file a bug in DirectX Shader Compiler: https://github.com/microsoft/DirectXShaderCompiler/issues/new/choose
To file a bug in Dawn: https://bugs.chromium.org/p/dawn/issues/entry

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

Bug: None
Tbr: jrprice@google.com
Change-Id: I999f1dc4b0e99280bf98147808382464aa63deae
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/208177
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index f8ddd04..159bd65 100644
--- a/DEPS
+++ b/DEPS
@@ -338,7 +338,7 @@
   },
 
   'third_party/dxc': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@9bfbee6c44deecf28111879f8d21fa15773181ef',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@88fcc1b031e19b41ce4806be57a0b9829f42c1fc',
   },
 
   'third_party/dxheaders': {
diff --git a/third_party/dxc b/third_party/dxc
index 9bfbee6..88fcc1b 160000
--- a/third_party/dxc
+++ b/third_party/dxc
@@ -1 +1 @@
-Subproject commit 9bfbee6c44deecf28111879f8d21fa15773181ef
+Subproject commit 88fcc1b031e19b41ce4806be57a0b9829f42c1fc