chore: update pre-commit hooks

Author: phofmeier

.pre-commit-config.yaml

@@ -42,6 +42,6 @@ repos:
       # - id: cpplint
       # - id: include-what-you-use
   - repo: https://github.com/pre-commit/mirrors-clang-format
-    rev: "v21.1.7" # Use the sha / tag you want to point at
+    rev: "v21.1.8" # Use the sha / tag you want to point at
     hooks:
       - id: clang-format