[pre-commit.ci] pre-commit autoupdate (#313)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -56,7 +56,7 @@ repos:
           - flake8-noqa==1.3
           - pep8-naming==0.13.3
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: "v2.7.1"
+    rev: "v3.0.0-alpha.4"
     hooks:
       - id: prettier
         additional_dependencies: