Bump coverage from 6.4.1 to 7.1.0

Bumps [coverage](https://github.com/nedbat/coveragepy) from 6.4.1 to 7.1.0.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](coveragepy/coveragepy@6.4.1...7.1.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 attrs==21.4.0
-coverage==6.4.1
+coverage==7.1.0
 iniconfig==1.1.1
 packaging==21.3
 pluggy==1.0.0