[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/asottile/reorder_python_imports: v3.8.3 → v3.8.4](https://github.com/asottile/reorder_python_imports/compare/v3.8.3...v3.8.4)
- [github.com/pre-commit/mirrors-mypy: v0.971 → v0.982](https://github.com/pre-commit/mirrors-mypy/compare/v0.971...v0.982)