Bump filelock from 3.12.4 to 3.20.3

Bumps [filelock](https://github.com/tox-dev/py-filelock) from 3.12.4 to 3.20.3.
- [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@3.12.4...3.20.3)

---
updated-dependencies:
- dependency-name: filelock
  dependency-version: 3.20.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]

requirements.dev.txt

@@ -55,7 +55,7 @@ entrypoints==0.4
 exceptiongroup==1.1.3
 executing==2.0.1
 fastjsonschema==2.18.1
-filelock==3.12.4
+filelock==3.20.3
 fonttools==4.61.0
 fqdn==1.5.1
 identify==2.5.30