Bump node from 18-alpine to 20-alpine

Bumps node from 18-alpine to 20-alpine.

---
updated-dependencies:
- dependency-name: node
  dependency-type: direct:production
...

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

Dockerfile

@@ -1,5 +1,5 @@
 # Install dependencies only when needed
-FROM node:18-alpine AS deps
+FROM node:20-alpine AS deps
 # Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
 RUN apk add --no-cache libc6-compat
 WORKDIR /app
@@ -14,7 +14,7 @@ RUN npm ci
 
 
 # Rebuild the source code only when needed
-FROM node:18-alpine AS builder
+FROM node:20-alpine AS builder
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
@@ -30,7 +30,7 @@ COPY . .
 RUN npm run build
 
 # Production image, copy all the files and run next
-FROM node:18-alpine AS runner
+FROM node:20-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV production