ci: Start supporting node.js 18 (#4518)

* ci: start supporting node.js 18

Node.js 18 becomes the active LTS on 2022-10-25, as Node.js 16 goes into maintenance mode.
https://github.com/nodejs/Release#release-schedule

* continue using node 16 for production images

* node 16 for debian and base images as well for now

.github/workflows/ci-pull-requests.yml

@@ -10,7 +10,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x]
+        node-version: [14.x, 16.x, 18.x]
 
     steps:
       - uses: actions/checkout@v3