chore: bump packaging from 21.3 to 22.0 in /tests

Bumps [packaging](https://github.com/pypa/packaging) from 21.3 to 22.0.
- [Release notes](https://github.com/pypa/packaging/releases)
- [Changelog](https://github.com/pypa/packaging/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pypa/packaging/compare/21.3...22.0)

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

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

tests/requirements_py3.txt

@@ -8,7 +8,7 @@ filelock==3.9.0
 idna==3.4
 iniconfig==1.1.1
 invoke==1.7.3
-packaging==21.3
+packaging==22.0
 pathlib2==2.3.7.post1
 pluggy==1.0.0
 psutil==5.9.4