Update sh to 1.12.14

[pyup-bot]

There's a new version of sh available.
You are currently using 1.12.13. I have updated it to 1.12.14

These links might come in handy: PyPI | Changelog | Repo

Changelog

1.12.14

• bugfix for poor sleep performance 378
• allow passing raw integer file descriptors for _out and _err handlers
• bugfix for when _tee and _out are used, and the _out is a tty or pipe 384
• bugfix where python 3.3+ detected different arg counts for bound method output callbacks 380

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖