Merge pull request #58 from dmuhs/pyup-update-pytest-6.0.1-to-6.0.2

Update pytest to 6.0.2

requirements_dev.txt

@@ -10,7 +10,7 @@ Sphinx==3.2.1
 sphinx-rtd-theme==0.5.0
 twine==3.2.0
 
-pytest==6.0.1
+pytest==6.0.2
 pytest-runner==5.2
 pytest-cov==2.10.1
 requests-mock==1.8.0