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](https://github.com/pytest-dev/pytest/compare/6.2.1...6.2.2)

requirements.txt

@@ -22,7 +22,7 @@ pyparsing==2.4.7
 py==1.10.0
 pyarrow==1.0.1
 pytest-lazy-fixture==0.6.3
-pytest==6.2.1
+pytest==6.2.2
 python-dateutil==2.8.1
 python-intervals==1.10.0.post1
 pytz==2020.5