chore(deps): bump filelock from 3.18.0 to 3.20.1

Bumps [filelock](https://github.com/tox-dev/py-filelock) from 3.18.0 to 3.20.1.
- [Release notes](https://github.com/tox-dev/py-filelock/releases)
- [Changelog](https://github.com/tox-dev/filelock/blob/main/docs/changelog.rst)
- [Commits](tox-dev/filelock@3.18.0...3.20.1)

---
updated-dependencies:
- dependency-name: filelock
  dependency-version: 3.20.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -27,7 +27,7 @@ colorama==0.4.6
     # via mkdocs-material
 distlib==0.3.9
     # via virtualenv
-filelock==3.18.0
+filelock==3.20.1
     # via virtualenv
 ghp-import==2.1.0
     # via mkdocs