Update clang-format rule

Author: serge-sans-paille

.github/workflows/style-check.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Run clang-format style check for C/C++ programs.
       uses: jidicula/[email protected]
       with:
-        clang-format-version: '17'
+        clang-format-version: '20'
         exclude-regex: 'doctest.h'
   inlining-check:
     runs-on: ubuntu-latest