Update port-for to 0.6.0

[pyup-bot]

This PR updates port-for from 0.4 to 0.6.0.

Changelog

0.6.0

----------

Feature
+++++++

- Added `get_port` helper that can randomly select open port out of given set, or range-tuple
- Added type annotations and compatibility with PEP 561
- Support only python 3.7 and up

Links

• PyPI: https://pypi.org/project/port-for
• Changelog: https://pyup.io/changelogs/port-for/
• Repo: https://github.com/kmike/port-for/

[pyup-bot]

Closing this in favor of #220