Update coverage requirement from ^6.2 to >=6.2,<8.0

Updates the requirements on [coverage](https://github.com/nedbat/coveragepy) to permit the latest version.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@6.2...7.2.1)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -59,7 +59,7 @@ safety = "^2.0.0"
 readme-renderer = "^34.0"
 pygount = "^1.2.4"
 types-PyYAML = "^6.0"
-coverage = "^6.2"
+coverage = ">=6.2,<8.0"
 beautifulsoup4 = "^4.11.1"
 pytest-django = "^4.5.2"
 django-test-migrations = "^1.2.0"