Bump filelock from 3.20.1 to 3.20.3 in the pip group across 1 directory

Bumps the pip group with 1 update in the / directory: [filelock](https://github.com/tox-dev/py-filelock).


Updates `filelock` from 3.20.1 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@3.20.1...3.20.3)

---
updated-dependencies:
- dependency-name: filelock
  dependency-version: 3.20.3
  dependency-type: indirect
  dependency-group: pip
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -6,7 +6,7 @@ colorlog==6.10.1
     # via gcovr
 distlib==0.4.0
     # via virtualenv
-filelock==3.20.1
+filelock==3.20.3
     # via virtualenv
 gcovr==8.4
     # via -r requirements-dev.in