chore(deps): update node.js to v20 (#171)

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

Dockerfile

@@ -1,5 +1,5 @@
 # Build layer template for an eventual TS migration
-FROM node:16.17.0-slim as builder
+FROM node:20.13.1-slim as builder
 ENV NODE_ENV=production
 
 # Set working directory
@@ -9,7 +9,7 @@ WORKDIR /app
 COPY package.json package-lock.json ./
 RUN npm ci --omit=dev
 
-FROM node:16.17.0-slim
+FROM node:20.13.1-slim
 ENV NODE_ENV=production
 
 # Set working directory