Bump pytest from 6.2.1 to 6.2.2

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.1 to 6.2.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.2.1...6.2.2)

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

requirements.txt

@@ -4,7 +4,7 @@ kua==0.2
 werkzeug==1.0.1
 
 # dev
-pytest==6.2.1
+pytest==6.2.2
 pytest-runner==5.2
 pytest-asyncio==0.14.0
 coveralls==3.0.0