Update pathlib2 to 2.3.7

[pyup-bot]

This PR updates pathlib2 from 2.3.5 to 2.3.7.

Changelog

2.3.7

^^^^^^^^^^^^^

- **This version will be the last release to support Python 2.7.**

- Fix bug in samefile on Windows when file does not exist.

- Add newline parameter for write_text (see issue 64).

- Add many more type annotations.

- Continuous integration migrated to github actions.

- Project migrated to jazzband.

2.3.6

^^^^^^^^^^^^^

- Fix minor unicode bugs in with_name and with_suffix. Many thanks to
ppentchev for reporting and for providing a fix.

- Fix a few minor bugs.

- Allow unicode file paths on systems that support it
(note: unicode file paths will not work on Windows
due a broken filesystem encoder on Windows on Python 2).

- Remove travis and add github actions for regression testing.

- Fix mypy warnings.

Links

• PyPI: https://pypi.org/project/pathlib2
• Changelog: https://pyup.io/changelogs/pathlib2/
• Repo: https://github.com/jazzband/pathlib2

[coveralls]

Coverage remained the same at 86.413% when pulling 811eea6 on pyup-update-pathlib2-2.3.5-to-2.3.7 into 2716a32 on master.

[pyup-bot]

Closing this in favor of #399