[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/pre-commit/mirrors-prettier: v3.1.0 → v4.0.0-alpha.8](pre-commit/mirrors-prettier@v3.1.0...v4.0.0-alpha.8)

.pre-commit-config.yaml

@@ -38,7 +38,7 @@ repos:
       - id: blacken-docs
         language_version: python3.9
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: "v3.1.0"
+    rev: "v4.0.0-alpha.8"
     hooks:
       - id: prettier
   - repo: https://github.com/pre-commit/pygrep-hooks