build(deps-dev): bump pytest from 7.2.1 to 7.2.2 in /demos/polls (#525)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.2.1 to 7.2.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.2.1...7.2.2)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

demos/polls/requirements-dev.txt

@@ -4,6 +4,6 @@ aiohttp-jinja2==1.5.1
 trafaret_config==2.0.2
 
 # For testing
-pytest==7.2.1
+pytest==7.2.2
 pytest-aiohttp==1.0.4
 flake8==6.0.0