Update pyroma from 2.5 to 2.6

Author: pyup-bot

dev-requirements.txt

@@ -16,7 +16,7 @@ pyenchant==2.0.0  # Bindings for a spellchecking sytem
 pygithub==1.44
 Pygments==2.4.2
 pylint==2.4.3  # Lint
-pyroma==2.5  # Packaging best practices checker
+pyroma==2.6  # Packaging best practices checker
 pytest-cov==2.8.1  # Measure code coverage
 pytest==5.2.1  # Test runners
 PyYAML==5.1.2