Bump node from 16.3.0-alpine to 16.4.0-alpine

Bumps node from 16.3.0-alpine to 16.4.0-alpine.

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

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:16.3.0-alpine as stage1
+FROM node:16.4.0-alpine as stage1
 COPY public /public
 RUN cd /public && \
 	npm ci && \