[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/rbubley/mirrors-prettier: 33811c2f2958275c07d11823c138f1b1f81ace20 → bc7af46104f0f5368b95878decf720f9f00c2559](rbubley/mirrors-prettier@33811c2...bc7af46)

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: 33811c2f2958275c07d11823c138f1b1f81ace20 # frozen: v3.4.1
+    rev: bc7af46104f0f5368b95878decf720f9f00c2559  # frozen: v3.4.2
     hooks:
       - id: prettier
         files: \.(css|md|yml|yaml)