Bump coverage[toml] from 7.2.7 to 7.3.0 (#788)

Bumps [coverage[toml]](https://github.com/nedbat/coveragepy) from 7.2.7 to 7.3.0.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.2.7...7.3.0)

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

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

requirements.txt

@@ -18,7 +18,7 @@ twine
 # Tests & Linting
 anyio==3.7.1
 black==23.7.0
-coverage[toml]==7.2.7
+coverage[toml]==7.3.0
 ruff==0.0.277
 mypy==1.4.1
 trio-typing==0.8.0