Have dependency check bot install same requirements as latest dependency checkin job

[dsherry]

Problem
Right now, dependency check bot (which uses github actions) installs core-requirements.txt and requirements.txt but not test-requirements.txt like latest_dependency_check does in the checkin tests.

Fix
We should update these to match, otherwise we'll get problems when we add things to the test reqs.

While we're at it, let's centralize all pip commands into the makefile so that we don't run into this sort of issue again.

Remove category-encoders for whitelist and latest_dependecies.txt

Marked as a blocker because we should fix this before merging more stuff to master to avoid confusion lol