chore(deps-dev): update coverage requirement from 7.5.4 to 7.6.0 (#124)

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](nedbat/coveragepy@7.5.4...7.6.0)

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

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pyproject.toml

@@ -59,7 +59,7 @@ defusedxml = "^0.7.1"
 
 [tool.poetry.dev-dependencies]
 tox = "4.11.4"
-coverage = "7.5.4"
+coverage = "7.6.0"
 xmldiff = "2.7.0"
 mypy =  "1.10.1"
 autopep8 = "2.3.1"