Bump flake8-requirements from 1.7.6 to 1.7.7 (#819)

Bumps [flake8-requirements](https://github.com/Arkq/flake8-requirements) from 1.7.6 to 1.7.7.
- [Release notes](https://github.com/Arkq/flake8-requirements/releases)
- [Commits](arkq/flake8-requirements@v1.7.6...v1.7.7)

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

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

requirements-dev.txt

@@ -4,7 +4,7 @@ flake8==6.0.0
 flake8-bandit==4.1.1
 flake8-bugbear==23.1.20
 flake8-import-order==0.18.2
-flake8-requirements==1.7.6
+flake8-requirements==1.7.7
 mypy==0.991
 pep257==0.7.0
 pre-commit==3.0.4