Update from node 18 to 20 in a few more places

.github/workflows/ci.yml

@@ -110,6 +110,6 @@ jobs:
         run: pip install -r requirements.txt
       - uses: actions/setup-node@v4
         with:
-          node-version: "18"
+          node-version: "20"
       - name: Bare Metal ${{ matrix.script.name }}
         run: sh tests/test_bare.sh ${{ matrix.script.args }}

{{cookiecutter.project_slug}}/compose/production/django/Dockerfile

@@ -1,5 +1,5 @@
 {% if cookiecutter.frontend_pipeline in ['Gulp', 'Webpack'] -%}
-FROM node:18-bullseye-slim as client-builder
+FROM node:20-bullseye-slim as client-builder
 
 ARG APP_HOME=/app
 WORKDIR ${APP_HOME}

{{cookiecutter.project_slug}}/package.json

@@ -35,7 +35,7 @@
     "webpack-merge": "^5.8.0"
   },
   "engines": {
-    "node": "18"
+    "node": "20"
   },
   "browserslist": [
     "last 2 versions"