ci: use clang-format 16

Bump clang-format version to 16. This is needed as upstream has updated
the config and clang-format 10 doesn't support it.

ChangeLog:
	* .github/workflows/clang-format.yml: Bump clang-format version.

Signed-off-by: Marc Poulhiès <dkm@kataplop.net>

Author: dkm

.github/workflows/clang-format.yml

@@ -23,4 +23,4 @@ jobs:
       with:
         source: 'gcc/rust/ libgrust/'
         extensions: 'h,cc'
-        clangFormatVersion: 10
+        clangFormatVersion: 16