Update pytest-cov to 3.0.0 (#68611)

requirements_test.txt

@@ -17,7 +17,7 @@ pylint==2.13.5
 pipdeptree==2.2.1
 pylint-strict-informational==0.1
 pytest-aiohttp==0.3.0
-pytest-cov==2.12.1
+pytest-cov==3.0.0
 pytest-freezegun==0.4.2
 pytest-socket==0.4.1
 pytest-test-groups==1.0.3

script/pip_check

@@ -3,7 +3,7 @@ PIP_CACHE=$1
 
 # Number of existing dependency conflicts
 # Update if a PR resolve one!
-DEPENDENCY_CONFLICTS=5
+DEPENDENCY_CONFLICTS=6
 
 PIP_CHECK=$(pip check --cache-dir=$PIP_CACHE)
 LINE_COUNT=$(echo "$PIP_CHECK" | wc -l)