Update pylint from 2.4.1 to 2.4.2

Author: pyup-bot

dev-requirements.txt

@@ -15,7 +15,7 @@ pydocstyle==4.0.1  # Lint docstrings
 pyenchant==2.0.0  # Bindings for a spellchecking sytem
 pygithub==1.43.8
 Pygments==2.4.2
-pylint==2.4.1  # Lint
+pylint==2.4.2  # Lint
 pyroma==2.5  # Packaging best practices checker
 pytest-cov==2.7.1  # Measure code coverage
 pytest==5.1.3  # Test runners