Merge branch 'bump-ubi-8-4' into 'development'

bump ubi

See merge request !8

Dockerfile

 ARG BASE_REGISTRY=registry1.dsop.io/ironbank/redhat/ubi
 ARG BASE_IMAGE=ubi8
-ARG BASE_TAG=8.3
+ARG BASE_TAG=8.4
 FROM spark-operator/spark-operator:v1beta2-1.0.0-2.4.4 AS base
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 RUN dnf install -y openssl curl

hardening_manifest.yaml

@@ -11,7 +11,7 @@ tags:
 # Build args passed to Dockerfile ARGs
 args:
   BASE_IMAGE: "redhat/ubi/ubi8"
-  BASE_TAG: "8.3"
+  BASE_TAG: "8.4"
 
 # Docker image labels
 labels: