ci: update 02 workflow file

Author: cronnoss

.github/workflows/deploy.yml

@@ -16,12 +16,12 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Setup Node
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 16
 
       - name: Install dependencies
-        uses: npm install
+        uses: bahmutov/npm-install@v1
 
       - name: Build project
         run: npm run build
@@ -36,11 +36,9 @@ jobs:
     name: Deploy
     needs: build
     runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main'
 
     steps:
-      - name: Checkout repo
-        uses: actions/checkout@v2
-
       - name: Download artifact
         uses: actions/download-artifact@v2
         with: