Update pytest-cov from 2.10.0 to 2.10.1

Author: pyup-bot

requirements/testing.txt

@@ -7,7 +7,7 @@ pytest==6.0.1
 pytest-custom-exit-code==0.3.0
 pytest-django==3.9.0
 pytest-xdist==2.0.0
-pytest-cov==2.10.0
+pytest-cov==2.10.1
 apipkg==1.5
 execnet==1.7.1