Bump coverage[toml] from 7.2.3 to 7.2.6 (#592)

Bumps [coverage[toml]](https://github.com/nedbat/coveragepy) from 7.2.3 to 7.2.6.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.2.3...7.2.6)

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

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

test-requirements.txt

@@ -8,7 +8,7 @@ attrs==23.1.0
     # via service-identity
 cffi==1.15.1
     # via cryptography
-coverage[toml]==7.2.3
+coverage[toml]==7.2.6
     # via -r test-requirements.in
 cryptography==40.0.2
     # via