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

updates:
- [github.com/pre-commit/mirrors-prettier: v2.5.1 → v2.6.0](https://github.com/pre-commit/mirrors-prettier/compare/v2.5.1...v2.6.0)

reupen/mmh,reupen/mmh