Update pre-commit to 0.18.3

[pyup-bot]

There's a new version of pre-commit available.
You are currently using 0.18.1. I have updated it to 0.18.3

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

Changelog

0.18.3

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• Allow --config to affect pre-commit install
• Tweak not found error message during pre-push / commit-msg
• Improve node support when running under cygwin.

0.18.2

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• Fix --all-files, detection of staged files, detection of manually edited
  files during merge conflict, and detection of files to push for non-ascii
  filenames.

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

Happy merging! 🤖