Bump autopep8 from 2.0.2 to 2.0.4

Bumps [autopep8](https://github.com/hhatto/autopep8) from 2.0.2 to 2.0.4.
- [Release notes](https://github.com/hhatto/autopep8/releases)
- [Commits](hhatto/autopep8@v2.0.2...v2.0.4)

---
updated-dependencies:
- dependency-name: autopep8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>