[pre-commit.ci] pre-commit autoupdate (#308)

* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/rbubley/mirrors-prettier: c2bc67fe8f8f549cc489e00ba8b45aa18ee713b1 → 4923370d55631aa5b66f612f52d67b2e0ca2a38c](rbubley/mirrors-prettier@c2bc67f...4923370)

* [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>

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -24,7 +24,7 @@ repos:
       - id: blacken-docs
 
   - repo: https://github.com/rbubley/mirrors-prettier
-    rev: c2bc67fe8f8f549cc489e00ba8b45aa18ee713b1 # frozen: v3.8.1
+    rev: 4923370d55631aa5b66f612f52d67b2e0ca2a38c # frozen: v3.9.1
     hooks:
       - id: prettier
         files: \.(css|md|yml|yaml)