Bump diff-cover from 6.5.0 to 6.5.1

Bumps [diff-cover](https://github.com/Bachmann1234/diff-cover) from 6.5.0 to 6.5.1.
- [Release notes](https://github.com/Bachmann1234/diff-cover/releases)
- [Changelog](https://github.com/Bachmann1234/diff_cover/blob/main/CHANGELOG)
- [Commits](Bachmann1234/diff_cover@v6.5.0...v6.5.1)

---
updated-dependencies:
- dependency-name: diff-cover
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

dev-requirements.txt

@@ -1,7 +1,7 @@
 bandit==1.7.4
 black==22.3.0
 coverage==6.4.1
-diff-cover==6.5.0
+diff-cover==6.5.1
 flake8==4.0.1
 mock==4.0.3
 pytest==7.1.2