Merge pull request #23 from k8s-at-home/renovate/pre-commit-pre-commit-hooks-4.x

chore(deps): update precommit hook pre-commit/pre-commit-hooks to v4

.pre-commit-config.yaml

@@ -8,7 +8,7 @@ repos:
     - .github/yamllint.config.yaml
     id: yamllint
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v3.4.0
+  rev: v4.0.0
   hooks:
   - id: trailing-whitespace
   - id: end-of-file-fixer