fix: update Dockerfile to fix CVE-2026-42945

Updated the base image from ubi9/nginx-120
(nginx 1.20.1, the vulnerable version) to ubi9/nginx-124
(nginx 1.24.x) in the Dockerfile.

This resolves CVE-2026-42945 by replacing the
affected nginx package with a patched version shipped in the
newer UBI9 nginx image.

More info: https://access.redhat.com/security/cve/cve-2026-42945

Refs: HAUKI-805

Author: mhieta

Dockerfile

@@ -51,7 +51,7 @@ RUN export APP_VERSION=$(yarn --silent app:version | tr -d '\n') && \
     envsubst '${APP_VERSION},${REACT_APP_RELEASE}' < /app/nginx.conf.template > /app/nginx.conf
 
 # =============================
-FROM registry.access.redhat.com/ubi9/nginx-120 as production
+FROM registry.access.redhat.com/ubi9/nginx-124 as production
 # =============================
 
 USER root