Roll third_party/spirv-cross/ f9ae06512..2e7a56258 (1 commit)

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Cross/+log/f9ae06512ef7..2e7a56258353

$ git log f9ae06512..2e7a56258 --date=short --no-merges --format='%ad
%ae %s'
2020-06-23 post HLSL: Workaround FXC bugs with degenerate switch blocks.

Created with:
    roll-dep third_party/spirv-cross

Bug: dawn:425
Change-Id: Ibc80512eeb55b46704daccfd7f4cc2d6c1ddedc9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/23760
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
diff --git a/DEPS b/DEPS
index 814f04b..13c8d79 100644
--- a/DEPS
+++ b/DEPS
@@ -61,7 +61,7 @@
 
   # SPIRV-Cross
   'third_party/spirv-cross': {
-    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Cross@f9ae06512ef744a1379d564ed0a202b12dc3478b',
+    'url': '{chromium_git}/external/github.com/KhronosGroup/SPIRV-Cross@2e7a5625835380857e785716efd8b2720bf2c84a',
     'condition': 'dawn_standalone',
   },