Bump pytest-cov from 2.8.1 to 2.10.1 (#718)

Author: dependabot-preview[bot]

requirements.txt

@@ -5,7 +5,7 @@ isort==4.3.4
 -e .[sa]
 sphinx==3.3.1
 pytest==6.1.2
-pytest-cov==2.8.1
+pytest-cov==2.10.1
 pytest-sugar==0.9.4
 pytest-timeout==1.3.4
 sphinxcontrib-asyncio==0.2.0