- fix-byte-order-marker (removes utf-8 byte order marker)
- end-of-file-fixer (ensures that a file is either empty, or ends with one newline)
- check-added-large-files (prevents giant files from being committed)
- forbid-tabs (forbid files containing tabs to be committed)

The version of following hooks were bumped:
- flake8 v2.2.3 -> flake8 v4.0.1

The language version of black formatter was changed from python3.6 to python3.
- Krake requires python>=3.6, therefore the version python3.6 cannot be
enforced.