chore: update Node.js version in CI workflow from 22.x to 20.x

Author: hoangsvit

.github/workflows/node.js.yml

@@ -1,6 +1,3 @@
-# This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
-
 name: Node.js CI
 
 on:
@@ -15,8 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [22.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+        node-version: [20.x]
 
     steps:
       - uses: actions/checkout@v4