chore(deps): Update nginxinc/nginx-unprivileged Docker tag to v1.31.7

runbooks/serving/deployment.yaml

@@ -87,7 +87,7 @@ spec:
           # Renovate maintains this pin. nginx-unprivileged (not nginx) so the container can honour
           # runAsNonRoot: the stock nginx image's entrypoint needs root to drop privileges and to
           # bind :80. `stable-alpine` branch, pinned exactly.
-          image: nginxinc/nginx-unprivileged:1.30.4-alpine
+          image: nginxinc/nginx-unprivileged:1.31.7-alpine
           imagePullPolicy: IfNotPresent
           ports:
             - name: http