chore(deps-dev): update coverage requirement from 7.8.2 to 7.9.1

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@7.8.2...7.9.1)

---
updated-dependencies:
- dependency-name: coverage
  dependency-version: 7.9.1
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -82,7 +82,7 @@ xml-validation = ["lxml"]
 
 [tool.poetry.group.dev.dependencies]
 ddt = "1.7.2"
-coverage = "7.8.2"
+coverage = "7.9.1"
 flake8 = "7.3.0"
 flake8-annotations = "3.1.1"
 flake8-bugbear = "24.12.12"