Roll external/spirv-headers/ 38f39dae5..cca08c63c (2 commits) (#5480)

* Roll external/re2/ 974f44c8d..7e0c1a9e2 (1 commit)

https://github.com/google/re2/compare/974f44c8d452...7e0c1a9e2417

$ git log 974f44c8d..7e0c1a9e2 --date=short --no-merges --format='%ad %ae %s'
2023-11-16 junyer WebAssembly support for threads is... fraught at every level.

Created with:
  roll-dep external/re2

* Roll external/spirv-headers/ 38f39dae5..cca08c63c (2 commits)

https://github.com/KhronosGroup/SPIRV-Headers/compare/38f39dae5baa...cca08c63cefa

$ git log 38f39dae5..cca08c63c --date=short --no-merges --format='%ad %ae %s'
2023-11-15 viktoria.maksimova Change token IDs for global_variable_fpga_decorations and global_variable_host_access (#389)
2023-11-15 johnkslang It seems d790ced752b5bfc06b6988baadef6eb2d16bdf96 add tabs. (#390)

Created with:
  roll-dep external/spirv-headers

---------

Co-authored-by: GitHub Actions[bot] <>
diff --git a/DEPS b/DEPS
index 3442a17..0b06cff 100644
--- a/DEPS
+++ b/DEPS
@@ -12,8 +12,8 @@
   # Use protobufs before they gained the dependency on abseil
   'protobuf_revision': 'v21.12',
 
-  're2_revision': '974f44c8d45242e710dc0a85a4defffdb3ce07fc',
-  'spirv_headers_revision': '38f39dae5baaa24431b24ac659054ebe972fa1e6',
+  're2_revision': '7e0c1a9e2417e70e5f0efc323267ac71d1fa0685',
+  'spirv_headers_revision': 'cca08c63cefa129d082abca0302adcb81610b465',
 }
 
 deps = {