Revert "Bump Node.js version to v20 (#210)" (#213)

This reverts commit 41e46fa.

Author: CountBleck

.github/workflows/deploy.yml

@@ -13,7 +13,7 @@ jobs:
     - uses: actions/checkout@v1.0.0
     - uses: dcodeIO/setup-node-nvm@master
       with:
-        node-version: 20
+        node-version: 16
     - name: Build
       run: |
         npm ci --no-audit