chore(deps): bump python-dotenv from 0.19.2 to 0.20.0

Bumps [python-dotenv](https://github.com/theskumar/python-dotenv) from 0.19.2 to 0.20.0.
- [Release notes](https://github.com/theskumar/python-dotenv/releases)
- [Changelog](https://github.com/theskumar/python-dotenv/blob/master/CHANGELOG.md)
- [Commits](theskumar/python-dotenv@v0.19.2...v0.20.0)

---
updated-dependencies:
- dependency-name: python-dotenv
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,6 +1,6 @@
 httpx == 1.0.0b0
 pedalboard==0.5.3
-python_dotenv == 0.19.2
+python_dotenv == 0.20.0
 rich == 11.2.0
 git+https://github.com/jps-aldridge/py-simple-audio@master#egg=simpleaudio
 SoundFile==0.10.3.post1