build(deps-dev): update pytest requirement from ^7.1 to ^8.0

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.1.0...8.0.0)

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

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

pyproject.toml

@@ -28,7 +28,7 @@ Pint = ">=0.17,<0.23"
 yaml = ["ruamel.yaml"]
 
 [tool.poetry.dev-dependencies]
-pytest = "^7.1"
+pytest = "^8.0"
 pytest-cov = "^4.0"
 pytest-console-scripts = "^1.2"