Bump pytest from 6.2.5 to 7.1.2

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 to 7.1.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.2.5...7.1.2)

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

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

Author: dependabot[bot]

requirements-dev.txt

@@ -5,7 +5,7 @@ docutils==0.17.1
 flake8==4.0.1
 grablib==0.8
 mypy==0.950
-pytest==6.2.5
+pytest==7.1.2
 pytest-aiohttp==1.0.4
 pytest-cov==3.0.0
 pytest-forked==1.4.0