Increase pytest timeout for tox -e cov

Timeout of 60 seconds isn't enough anymore, let's se higher number now.

Author: rbikar

tox.ini

@@ -27,7 +27,7 @@ deps=
 	pytest-timeout
 usedevelop=true
 commands=
-	pytest -svv --timeout 60 --cov-report=html --cov-report=xml --cov=pubtools --cov-fail-under=100 {posargs}
+	pytest -svv --timeout 240 --cov-report=html --cov-report=xml --cov=pubtools --cov-fail-under=100 {posargs}
 
 [testenv:lock]
 deps=