Bump coverage from 6.2 to 7.2.7

Bumps [coverage](https://github.com/nedbat/coveragepy) from 6.2 to 7.2.7.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@6.2...7.2.7)

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

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

requirements_test.txt

@@ -1,5 +1,5 @@
 aresponses==2.1.6
-coverage==6.2
+coverage==7.2.7
 flake8==4.0.1
 flake8-docstrings==1.6.0
 isort==5.11.5