Bump coverage from 7.3.2 to 7.4.0 (#369)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.3.2 to 7.4.0.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.3.2...7.4.0)

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

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

dev-requirements.txt

@@ -1,5 +1,5 @@
 -r requirements.txt
-coverage==7.3.2
+coverage==7.4.0
 pytest==7.4.3
 pytest-asyncio==0.21.1
 pytest-aiohttp==1.0.5