Bump coverage[toml] from 7.3.0 to 7.3.1

Bumps [coverage[toml]](https://github.com/nedbat/coveragepy) from 7.3.0 to 7.3.1.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.3.0...7.3.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

dev-requirements.txt

@@ -16,7 +16,7 @@ click==8.1.7
     # via
     #   black
     #   pip-tools
-coverage[toml]==7.3.0
+coverage[toml]==7.3.1
     # via pytest-cov
 distlib==0.3.7
     # via virtualenv