[emacs] update 6 drones

Update lib/flycheck-haskell to  0.8-75-g072c854
Update lib/helm             to v3.0-45-g84a59b1e
Update lib/magit            to v2.90.1-10-g36d89c88
Update lib/magithub         to  0.1.7-41-g94e9f9a
Update lib/org              to release_9.1.14-1036-g7bf3c1081
Update lib/pdf-tools        to v0.80-134-g105dd01