build(deps-dev): bump flake8-annotations from 3.0.1 to 3.1.0

Bumps [flake8-annotations](https://github.com/sco1/flake8-annotations) from 3.0.1 to 3.1.0.
- [Release notes](https://github.com/sco1/flake8-annotations/releases)
- [Changelog](https://github.com/sco1/flake8-annotations/blob/main/CHANGELOG.md)
- [Commits](sco1/flake8-annotations@v3.0.1...v3.1.0)

---
updated-dependencies:
- dependency-name: flake8-annotations
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

dev-requirements.txt

@@ -36,7 +36,7 @@ flake8==7.0.0
     #   flake8-pep3101
     #   flake8-print
     #   offlinemsmtp (pyproject.toml)
-flake8-annotations==3.0.1
+flake8-annotations==3.1.0
     # via offlinemsmtp (pyproject.toml)
 flake8-bugbear==24.4.26
     # via offlinemsmtp (pyproject.toml)