chore: use node 18 and 20

.github/workflows/pr-build.yml

@@ -21,7 +21,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x]
+        node-version: [18.x, 20.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:

Dockerfile

@@ -1,7 +1,7 @@
 # build environment
-FROM node:18-bullseye-slim AS builder
+FROM node:20-bullseye-slim AS builder
 # fix vulnerabilities
-ARG NPM_TAG=9.6.4
+ARG NPM_TAG=9.9.2
 RUN npm install -g npm@${NPM_TAG}
 # build it
 WORKDIR /build
@@ -10,7 +10,7 @@ RUN npm ci
 RUN npm run build
 
 # run environment
-FROM node:18.16.0-bullseye-slim
+FROM node:20.11.0-bullseye-slim
 # fix vulnerabilities
 # note: trivy insists this to be on the same RUN line
 RUN apt-get -y update && apt-get -y upgrade