Bump coverage from 5.4 to 7.6.8 (#274)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 5.4 to 7.6.8.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@coverage-5.4...7.6.8)

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

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

requirements-test.txt

@@ -1,6 +1,6 @@
 -r requirements.txt
 allure-pytest==2.13.5
-coverage==5.4
+coverage==7.6.8
 pytest==6.2.5
 pytest-cov==2.11.1
 # pylint==2.9.3