Bump filelock from 3.13.1 to 3.15.4

Bumps [filelock](https://github.com/tox-dev/py-filelock) from 3.13.1 to 3.15.4.
- [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@3.13.1...3.15.4)

---
updated-dependencies:
- dependency-name: filelock
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

{{ cookiecutter.project_slug }}/dev-requirements.txt

@@ -16,7 +16,7 @@ coverage[toml]==7.6.0
     # via pytest-cov
 distlib==0.3.8
     # via virtualenv
-filelock==3.13.1
+filelock==3.15.4
     # via
     #   pytest-mypy
     #   virtualenv