downgrade Node.js to version 16 (which uses OpenSSL 1.x)

.github/workflows/deploy.yml

@@ -32,7 +32,9 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '18'
+          node-version: '16'
+      # (ERR_OSSL_EVP_UNSUPPORTED) typically arises because Node.js is using OpenSSL 3.x, which has stricter defaults. Some libraries, such as webpack or older dependencies, may not yet be compatible with these stricter OpenSSL 3.x settings.
+      # NODE_OPTIONS=--openssl-legacy-provider ng deploy
 
       - name: Install dependencies
         run: npm ci