chore(deps): update node.js to v22.21.0 (#201)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:22.20 AS build
+FROM node:22.21 AS build
 
 COPY frontend/package.json frontend/build-scripts/extract-versions.js frontend/package-lock.json .npmrc /app/frontend/
 COPY backend/package.json backend/package-lock.json .npmrc /app/backend/
@@ -12,7 +12,7 @@ COPY . ./
 
 RUN npm run build
 
-FROM node:22.20.0-alpine
+FROM node:22.21.0-alpine
 
 ENV USER_UID=1001
 ENV GROUP_UID=1001