Bump node from 16 to 23

Bumps node from 16 to 23.

---
updated-dependencies:
- dependency-name: node
  dependency-version: '23'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Dockerfile

@@ -1,5 +1,5 @@
 # Build container for the frontend bundle
-FROM node:16 as build
+FROM node:23 as build
 
 WORKDIR /usr/src/app
 
@@ -9,7 +9,7 @@ RUN npm ci
 RUN npm run build:staging
 
 # Create the server to host the static files
-FROM node:16 as server
+FROM node:23 as server
 
 WORKDIR /usr/src/app