Python dependency: Bump coverage from 7.2.3 to 7.2.7 in /web/regression (#6413)

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.2.3 to 7.2.7.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](https://github.com/nedbat/coveragepy/compare/7.2.3...7.2.7)

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

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

web/regression/requirements.txt

@@ -26,4 +26,4 @@ testscenarios==0.5.0
 testtools==2.6.0
 traceback2==1.4.0
 selenium==4.10.0
-coverage==7.2.3
+coverage==7.2.7