Merge pull request #1505 from jupyterhub/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Author: consideRatio

.pre-commit-config.yaml

@@ -49,7 +49,7 @@ repos:
 
   # Autoformat: js, html, markdown, yaml, json
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.6.2
+    rev: v2.7.1
     hooks:
       - id: prettier
         exclude_types: