[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/executablebooks/mdformat: 0.7.19 → 0.7.21](https://github.com/executablebooks/mdformat/compare/0.7.19...0.7.21)
- [github.com/astral-sh/ruff-pre-commit: v0.8.3 → v0.8.4](https://github.com/astral-sh/ruff-pre-commit/compare/v0.8.3...v0.8.4)
- [github.com/pre-commit/mirrors-mypy: v1.13.0 → v1.14.0](https://github.com/pre-commit/mirrors-mypy/compare/v1.13.0...v1.14.0)