Update pytest requirement from ^6.2.5 to ^7.0.1

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](https://github.com/pytest-dev/pytest/compare/6.2.5...7.0.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -20,7 +20,7 @@ python-dateutil = "^2.8.0"
 [tool.poetry.dev-dependencies]
 Sphinx = "^4.3.1"
 flake8 = "^4.0.1"
-pytest = "^6.2.5"
+pytest = "^7.0.1"
 sphinx-autodoc-typehints = "^1.12.0"
 pyenchant = "^3.2.2"
 sphinxcontrib-spelling = "^7.3.0"