Add overrides construct for npm only compliance

[JewelPengin]

This will allow build chains that are using pure npm and not yarn to take advantage of the security fix for d3-color.

[JewelPengin]

IMHO the true fix should probably be just to upgrade the d3-scale dependency to the latest of ^4.0.2. It builds fine with that version on my end, however there aren't any tests to verify this. This change at least has parity with the resolutions construct.