Update registry1.dso.mil/ironbank/redhat/ubi/ubi9-minimal Docker tag to v9.4

Dockerfile

 ARG BASE_REGISTRY=registry1.dso.mil
 ARG BASE_IMAGE=ironbank/redhat/ubi/ubi9-minimal
-ARG BASE_TAG=9.3
+ARG BASE_TAG=9.4
 
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}