Update coverage requirement in the python-requirements group (#242)

Updates the requirements on [coverage](https://github.com/coveragepy/coveragepy) to permit the latest version.

Updates `coverage` to 7.13.0
- [Release notes](https://github.com/coveragepy/coveragepy/releases)
- [Changelog](https://github.com/coveragepy/coveragepy/blob/main/CHANGES.rst)
- [Commits](coveragepy/coveragepy@7.12.0...7.13.0)

---
updated-dependencies:
- dependency-name: coverage
  dependency-version: 7.13.0
  dependency-type: direct:production
  dependency-group: python-requirements
...

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Author: dependabot[bot]

requirements-test.txt

@@ -1,5 +1,5 @@
 -e .
-coverage == 7.12.*
+coverage == 7.13.*
 mypy == 1.19.*
 pre-commit == 4.5.*
 pytest==9.0.*