Bump luigi from 3.5.2 to 3.6.0

Bumps [luigi](https://github.com/spotify/luigi) from 3.5.2 to 3.6.0.
- [Release notes](https://github.com/spotify/luigi/releases)
- [Changelog](https://github.com/spotify/luigi/blob/master/RELEASE-PROCESS.rst)
- [Commits](spotify/luigi@v3.5.2...v3.6.0)

---
updated-dependencies:
- dependency-name: luigi
  dependency-type: direct:production
...

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