Bump cycler from 0.12.0 to 0.12.1

Bumps [cycler](https://github.com/matplotlib/cycler) from 0.12.0 to 0.12.1.
- [Release notes](https://github.com/matplotlib/cycler/releases)
- [Commits](matplotlib/cycler@v0.12.0...v0.12.1)

---
updated-dependencies:
- dependency-name: cycler
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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