NETOBSERV-218 upgrade base image

Dockerfile

@@ -28,7 +28,7 @@ COPY Makefile Makefile
 RUN make compile
 
 # Create final image from minimal + built binary
-FROM registry.access.redhat.com/ubi8/ubi-minimal:8.5-204
+FROM registry.access.redhat.com/ubi8/ubi-minimal:8.5-240
 WORKDIR /
 COPY --from=builder /opt/app-root/src/bin/netobserv-agent .
 USER 65532:65532