ignore "E501 line too long" which turned into deadlock making "mypy" happy

setup.cfg

@@ -30,7 +30,7 @@ known_third_party = defusedxml,passlib,pkg_resources,pytest,vobject
 # Only enable default tests (https://github.com/PyCQA/flake8/issues/790#issuecomment-812823398)
 # DNE: DOES-NOT-EXIST
 select = E,F,W,C90,DNE000
-ignore = E121,E123,E126,E226,E24,E704,W503,W504,DNE000
+ignore = E121,E123,E126,E226,E24,E704,W503,W504,DNE000,E501
 extend-exclude = build
 
 [mypy]