Roll DirectX Shader Compiler from dbb9c9757a73 to e7b78ff9c99c (4 revisions)

https://chromium.googlesource.com/external/github.com/microsoft/DirectXShaderCompiler.git/+log/dbb9c9757a73..e7b78ff9c99c

2024-05-01 cbieneman@microsoft.com Backport `-Wdouble-promotion` from Clang 3.8 (#6574)
2024-04-30 cbieneman@microsoft.com [202x] Implementaiton of conforming literals (#6572)
2024-04-26 python3kgae@outlook.com [DxilOp] Allow generation of illegal DXIL operations. (#6543)
2024-04-26 49699333+dependabot[bot]@users.noreply.github.com Bump black from 23.9.1 to 24.3.0 in /utils/git (#6438)

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 enga@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: enga@google.com
Change-Id: I70650fdc17cd17de6448d88388d1bdab064e1140
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/186523
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 7bcdec1..36905d0 100644
--- a/DEPS
+++ b/DEPS
@@ -204,7 +204,7 @@
   },
 
   'third_party/dxc': {
-    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@dbb9c9757a735865234e998f8a0b4bf576b141f0',
+    'url': '{chromium_git}/external/github.com/microsoft/DirectXShaderCompiler@e7b78ff9c99c19a6a0c98256db9794e0af4eb59d',
   },
 
   'third_party/dxheaders': {
diff --git a/third_party/dxc b/third_party/dxc
index dbb9c97..e7b78ff 160000
--- a/third_party/dxc
+++ b/third_party/dxc
@@ -1 +1 @@
-Subproject commit dbb9c9757a735865234e998f8a0b4bf576b141f0
+Subproject commit e7b78ff9c99c19a6a0c98256db9794e0af4eb59d