Update coverage requirement from ==7.2.* to ==7.3.* (fabiocaccamo#312)

Updates the requirements on [coverage](https://github.com/nedbat/coveragepy) to permit the latest version.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](coveragepy/coveragepy@7.2.0...7.3.0)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-test.txt

@@ -1,4 +1,4 @@
-coverage == 7.2.*
+coverage == 7.3.*
 pre-commit == 3.3.*
 psycopg2-binary == 2.9.*
 tox == 4.11.*