Add workflow test that verifies that the dependencies can resolve

Recently we merged #147 which bumps the process lib from 4.2.4 to 5.0.0

However 4.2.4 is pinned by flutter_driver from the flutter SDK so 5.0.0. won't work but our tests didn't catch that and I didn't know that it was pinned to a certain version.

thoughts? @denrase 