Bump homeassistant from 2020.12.0 to 2020.12.1 (#244)

Bumps [homeassistant](https://github.com/home-assistant/core) from 2020.12.0 to 2020.12.1.
- [Release notes](https://github.com/home-assistant/core/releases)
- [Changelog](https://github.com/home-assistant/core/blob/dev/azure-pipelines-release.yml)
- [Commits](https://github.com/home-assistant/core/compare/2020.12.0...2020.12.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Pierre Ståhl <pierre.staahl@gmail.com>

requirements_test.txt

@@ -6,4 +6,4 @@ pydocstyle==5.1.1
 cryptography==3.2
 pylint==2.6.0
 pylint-strict-informational==0.1
-homeassistant==2020.12.0
+homeassistant==2020.12.1