Only update pre-commit monthly (#403)

* Only update pre-commit monthly

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -1,3 +1,7 @@
+# Configuring https://pre-commit.ci/
+ci:
+    autoupdate_schedule: monthly
+
 exclude: 'conf.py|test_file_conflicts_pathtable.py'
 
 repos: