Merge pull request #307 from QGIS-Contribution/dependabot/pip/require…

…ments/pytest-cov-gte-3-and-lt-4.2

Update pytest-cov requirement from <3.1,>=3 to >=3,<4.2 in /requirements

requirements/testing.txt

@@ -1,6 +1,6 @@
 # Testing dependencies
 # --------------------
 
-pytest-cov>=3,<3.1
+pytest-cov>=3,<4.2
 pytest-qgis>=1.3,<1.4
 semver>=2.13,<2.14