Bump coverage from 7.4.3 to 7.4.4

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.4.3 to 7.4.4.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.4.3...7.4.4)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

test_reqs.txt

@@ -1,5 +1,5 @@
 Markdown==3.5.2  # pyup: <3.2
-coverage==7.4.3
+coverage==7.4.4
 importlib_metadata<7.1
 typing_extensions==4.10.0
 zipp==3.18.0  # for flake8