fix: remove invalid --security-opt flag from push.sh build commands

Docker/push.sh

@@ -65,14 +65,12 @@ log "Logging in to ${REGISTRY}"
 if [[ "${SKIP_BUILD}" == false ]]; then
     log "Building backend image  →  ${BACKEND_IMAGE}:${TAG}"
     "${ENGINE}" build \
-        --security-opt=no-new-privileges:true \
         -t "${BACKEND_IMAGE}:${TAG}" \
         -f "${SCRIPT_DIR}/Dockerfile.backend" \
         "${PROJECT_ROOT}"
 
     log "Building frontend image  →  ${FRONTEND_IMAGE}:${TAG}"
     "${ENGINE}" build \
-        --security-opt=no-new-privileges:true \
         -t "${FRONTEND_IMAGE}:${TAG}" \
         -f "${SCRIPT_DIR}/Dockerfile.frontend" \
         "${PROJECT_ROOT}"