Lock ubi version to 9.3 to prevent conflicts

ubi base image in 9.4 and latest uses openssl-libs-1:3.2.1-1.el9.x86_64
that conflicts with openssl-fips-provider-3.0.7-2.el9.x86_64 from
mirror.stream.centos.org_9-stream_BaseOS_x86_64_os because the centos
contains openssl-libs-3.2.1-1.el9.x86_64.rpm. we cannot remove the
older version because systemd depends on it. So lock the version
until its resolved in upstream

Signed-off-by: Madhu Challa <challa@gmail.com>

docker/travis/Dockerfile-opflex

@@ -1,4 +1,4 @@
-FROM registry.access.redhat.com/ubi9/ubi-minimal:latest
+FROM registry.access.redhat.com/ubi9/ubi-minimal:9.3
 RUN microdnf install -y yum yum-utils
 RUN yum update -y --nogpgcheck --disablerepo=* --repofrompath=centos,https://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os  --repofrompath=centos-app,https://mirror.stream.centos.org/9-stream/AppStream/x86_64/os && rm -rf /var/cache/yum
 RUN yum install -y --nogpgcheck --disablerepo=* --repofrompath=centos,https://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os --repofrompath=centos-app,https://mirror.stream.centos.org/9-stream/AppStream/x86_64/os \

docker/travis/Dockerfile-opflex-build-base

@@ -1,4 +1,4 @@
-FROM registry.access.redhat.com/ubi9/ubi-minimal:latest
+FROM registry.access.redhat.com/ubi9/ubi-minimal:9.3
 ENV ROOT=/usr/local
 ARG make_args=-j1
 RUN microdnf install -y yum yum-utils \

docker/travis/Dockerfile-opflexserver

@@ -1,4 +1,4 @@
-FROM registry.access.redhat.com/ubi9/ubi-minimal:latest
+FROM registry.access.redhat.com/ubi9/ubi-minimal:9.3
 RUN microdnf install -y yum yum-utils \
  && yum-config-manager --add-repo=https://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os \
  && yum-config-manager --add-repo=https://mirror.stream.centos.org/9-stream/AppStream/x86_64/os \