Update pytest from 6.2.4 to 6.2.5 (#598)

Co-authored-by: Abhinav Singh <[email protected]>

Author: pyup-bot

requirements-testing.txt

@@ -2,7 +2,7 @@ wheel==0.37.0
 python-coveralls==2.9.3
 coverage==5.5
 flake8==3.9.2
-pytest==6.2.4
+pytest==6.2.5
 pytest-cov==2.12.1
 autopep8==1.5.7
 mypy==0.812