Bump pytest from 6.1.2 to 6.2.0

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.1.2 to 6.2.0.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/master/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@6.1.2...6.2.0)

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

requirements/test.txt

@@ -1,5 +1,5 @@
 async-timeout==3.0.1
-pytest==6.1.2
+pytest==6.2.0
 pytest-cov==2.10.1
 pytest-asyncio==0.14.0
 flake8==3.8.4