Python-deploy

New features:

* Add --build-args option to pass extra arguments to 'docker build' (by psrok1 in https://github.com/CERT-Polska/python-deploy/pull/8)

**Full Changelog**: https://github.com/CERT-Polska/python-deploy/compare/v4.0.2...v4.1.0

Bugfixes:

- Bumped pyyaml to `>=6.0.1,<7.0.0` to solve installation issues (https://github.com/CERT-Polska/python-deploy/pull/9)

Bugfixes:

- Fix: push and production doesn't build Docker images (https://github.com/CERT-Polska/python-deploy/issues/4)

New features and improvements:

- Support for `cronjob` and `init-container` fields
- `deploy production` and `deploy staging` always uses `kubectl apply` instead of `kubectl set image`
- Code refactor and modularization

Python >= 3.8 is required from now.

Initial public release