Bump flake8-requirements from 2.1.0 to 2.1.1 (#572)

Bumps [flake8-requirements](https://github.com/Arkq/flake8-requirements) from 2.1.0 to 2.1.1.
- [Commits](arkq/flake8-requirements@v2.1.0...v2.1.1)

---
updated-dependencies:
- dependency-name: flake8-requirements
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements-dev.txt

@@ -4,5 +4,5 @@ flake8==7.0.0
 flake8-bandit==4.1.1
 flake8-bugbear==24.2.6
 flake8-import-order==0.18.2
-flake8-requirements==2.1.0
+flake8-requirements==2.1.1
 mypy==1.9.0; implementation_name=="cpython"