Bump coverage

Bumps the dependencies group with 1 update in the /receptorctl directory: [coverage](https://github.com/nedbat/coveragepy).


Updates `coverage` from 7.6.1 to 7.6.4
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.6.1...7.6.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

receptorctl/requirements/tests.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile --allow-unsafe --output-file=requirements/tests.txt --strip-extras requirements/tests.in
 #
-coverage==7.6.1
+coverage==7.6.4
     # via
     #   -r requirements/tests.in
     #   pytest-cov