Bump pytest from 6.2.5 to 7.0.1 in /tools

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 to 7.0.1.
- [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...7.0.1)

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

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

tools/requirements_pytest.txt

@@ -1,3 +1,3 @@
-pytest==6.2.5
+pytest==7.0.1
 pytest-cov==3.0.0
 hypothesis==6.31.3