Roll DirectX Shader Compiler from ceff9b8043df to 668ecf2c09b2 (3 revisions)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/ceff9b8043df..668ecf2c09b2

2023-11-09 python3kgae@outlook.com [Linux] Enable PDBUtil test for Linux build (#5942)
2023-11-09 grroth@microsoft.com [lit][SPIRV] convert runFileTest shaders to lit FileCheck test (#5929)
2023-11-09 python3kgae@outlook.com [CI] add workflow to apply clang-format diff (#5984)

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 amaiorano@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: amaiorano@google.com
Change-Id: I3734715c7cfff8b14966b4419d3631a4a21ce1dc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/160121
Kokoro: Kokoro <noreply+kokoro@google.com>
Bot-Commit: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Dawn Autoroller <dawn-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 22e5109..70ebb8c 100644
--- a/DEPS
+++ b/DEPS
@@ -197,7 +197,7 @@
   },
 
   'third_party/dxc': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@ceff9b8043df3ac8d7d3ce71b409d83afcd7925b',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@668ecf2c09b2c0da84f45cc6519a3d35441f3797',
   },
 
   'third_party/dxheaders': {
diff --git a/third_party/dxc b/third_party/dxc
index ceff9b8..668ecf2 160000
--- a/third_party/dxc
+++ b/third_party/dxc
@@ -1 +1 @@
-Subproject commit ceff9b8043df3ac8d7d3ce71b409d83afcd7925b
+Subproject commit 668ecf2c09b2c0da84f45cc6519a3d35441f3797