Update coverage dependency (#1235)

Bumps the pypi group in /requirements with 1 update: [coverage](https://github.com/nedbat/coveragepy).


Updates `coverage` from 7.4.0 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@7.4.0...7.4.4)

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

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

requirements/tests.txt

@@ -2,7 +2,7 @@ Jinja2==3.1.3
 beautifulsoup4==4.12.3
 brotli==1.1.0
 calmjs==3.4.4
-coverage==7.4.0
+coverage==7.4.4
 csscompressor==0.9.5
 django-sekizai==4.1.0
 flake8==7.0.0