Upgrade pylint (#27279)
* Upgrade pylint to 2.4.2 and astroid to 2.3.1
https://pylint.readthedocs.io/en/latest/whatsnew/2.4.html
https://pylint.readthedocs.io/en/latest/whatsnew/changelog.html#what-s-new-in-pylint-2-4-1
https://pylint.readthedocs.io/en/latest/whatsnew/changelog.html#what-s-new-in-pylint-2-4-2
* unnecessary-comprehension fixes
* invalid-name fixes
* self-assigning-variable fixes
* Re-enable not-an-iterable
* used-before-assignment fix
* invalid-overridden-method fixes
* undefined-variable __class__ workarounds
https://github.com/PyCQA/pylint/issues/3090
* no-member false positive disabling
* Remove some no longer needed disables
* using-constant-test fix
* Disable import-outside-toplevel for now
* Disable some apparent no-value-for-parameter false positives
* invalid-overridden-method false positive disables
https://github.com/PyCQA/pylint/issues/3150
* Fix unintentional Entity.force_update override in AfterShipSensor
761d7f21e9