[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/mwouts/jupytext: v1.18.0rc0 → v1.18.1](mwouts/jupytext@v1.18.0rc0...v1.18.1)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/mwouts/jupytext
-    rev: v1.18.0rc0
+    rev: v1.18.1
     hooks:
       - id: jupytext
         args: [--sync]