update version of ubi in images.txt

Feature Request

images.txt in release 1.4.0 has "registry1.dso.mil/ironbank/redhat/ubi/ubi8:8.2" This should be updated to be 8.3

Why

To help minimize the size of the images.tar.gz This is based on the assumption that the other IB images are based on ubi 8.3

Proposed Solution

Not sure where its coming from Perhaps an init container?