Bump pytest from 6.2.5 to 7.0.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 to 7.0.0.
- [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...7.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

requirements-dev.txt

@@ -7,7 +7,7 @@ coveralls==3.3.1
 flake8==4.0.1
 flake8-tidy-imports==4.6.0
 mypy==0.931
-pytest==6.2.5
+pytest==7.0.0
 pytest-asyncio==0.17.2
 pytest-cov==3.0.0
 pytest-mock==3.7.0