Bump node from 25.2.1-alpine to 25.4.0-alpine (#7305)

Bumps node from 25.2.1-alpine to 25.4.0-alpine.

---
updated-dependencies:
- dependency-name: node
  dependency-version: 25.4.0-alpine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Stage 1: Build frontend assets.
-FROM node:25.2.1-alpine as frontend-build
+FROM node:25.4.0-alpine as frontend-build
 
 ENV NODE_ENV production
 COPY .babelrc rollup.config.js gulpfile.js package.json .yarnrc.yml yarn.lock /tmp/frontend-build/