chore(deps-dev): update coverage requirement from 7.3.3 to 7.4.0 (#524)

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@7.3.3...7.4.0)

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

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pyproject.toml

@@ -81,7 +81,7 @@ xml-validation = ["lxml"]
 
 [tool.poetry.group.dev.dependencies]
 ddt = "1.7.0"
-coverage = "7.3.3"
+coverage = "7.4.0"
 flake8 = { version="6.1.0", python=">=3.8.1" }
 flake8-annotations = { version="3.0.1", python=">=3.8.1" }
 flake8-bugbear = { version="23.12.2", python=">=3.8.1" }