Merge pull request #8318 from docker/dependabot/pip/pytest-6.2.4

Bump pytest from 6.0.1 to 6.2.4

requirements-dev.txt

@@ -4,6 +4,6 @@ ddt==1.4.2
 flake8==3.8.3
 gitpython==3.1.11
 mock==3.0.5
-pytest==6.0.1; python_version >= '3.5'
+pytest==6.2.4; python_version >= '3.5'
 pytest==4.6.5; python_version < '3.5'
 pytest-cov==2.10.1