main/py3-filelock: upgrade to 3.4.2
https://py-filelock.readthedocs.io/en/latest/changelog.html#v3-4-2-2021-12-16
v3.4.2 (2021-12-16)
- Drop support for python 3.6
v3.4.1 (2021-12-16)
- Add stacklevel to deprecation warnings for argument name change
v3.4.0 (2021-11-16)
- Add correct spelling of poll interval parameter for acquire method, raise deprecation warning when using the misspelled form
v3.3.2 (2021-10-29)
- Accept path types (like pathlib.Path and pathlib.PurePath) in the constructor for FileLock objects.
v3.3.1 (2021-10-15)
- Add changelog to the documentation
- Leave the log level of the filelock logger as not set (previously was set to warning)
v3.3.0 (2021-10-03)
- Drop python 2.7 and 3.5 support, add type hints
- Document asyncio support
- fix typo
v3.2.1 (2021-10-02)
- Improve documentation
- Changed logger name from filelock._api to filelock
v3.2.0 (2021-09-30)
- Raise when trying to acquire in R/O or missing folder
- Move lock acquire/release log from INFO to DEBUG
- Fix spelling and remove ignored flake8 checks
- Split main module
- Move test suite to pytest
v3.1.0 (2021-09-27)
- Update links for new home at tox-dev
- Fixed link to LICENSE file
- Adopt tox-dev organization best practices
- Ownership moved from benediktschmitt to the tox-dev organization (new primary maintainer gaborbernat)