Revert "Bump clang-format"

This reverts commit be1b77a.

Author: Salanto

.github/workflows/main.yml

@@ -18,9 +18,9 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Run clang-format style check.
-      uses: jidicula/clang-format-action@v4.16.0
+      uses: jidicula/clang-format-action@v4.5.0
       with:
-        clang-format-version: '21'
+        clang-format-version: '14'
         check-path: '.'
 
   build-linux: