Update .pre-commit-config.yaml

Author: felixhekhorn

.pre-commit-config.yaml

@@ -2,6 +2,7 @@
 # See https://pre-commit.com/hooks.html for more hooks
 ci:
   autofix_prs: false
+  autoupdate_schedule: monthly
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0