Merge pull request #1730 from jupyter/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Author: mathbunnyru

.pre-commit-config.yaml

@@ -52,7 +52,7 @@ repos:
 
   # Autoformat: YAML, JSON, Markdown, etc.
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.6.2
+    rev: v2.7.1
     hooks:
       - id: prettier