Bump homeassistant from 2021.5.5 to 2021.6.0 (#37)

Bumps [homeassistant](https://github.com/home-assistant/core) from 2021.5.5 to 2021.6.0.
- [Release notes](https://github.com/home-assistant/core/releases)
- [Commits](home-assistant/core@2021.5.5...2021.6.0)

---
updated-dependencies:
- dependency-name: homeassistant
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>