conda pkg build needs to pin rt mkl/openssl

Overview

Conda might find new recipes/pgs during the build phase, different from the compiled/tested source, unless you pin these versions in the meta.yaml file.

Of importance is the openssl and the mkl (win) library. Since a missmatch in those will cause problem at runtime (loading win dll's will fail because they look for open ssl 1.1.1, but the conda spec might end up with 3.0 in the deps).