fix(ci): add permissions to deploy workflow

Author: benjie

.github/workflows/deploy.yml

@@ -32,6 +32,9 @@ jobs:
           --health-cmd pg_isready --health-interval 10s --health-timeout 5s
           --health-retries 5 --name postgres
 
+    permissions:
+      contents: write
+
     steps:
       - uses: actions/checkout@v2
       - name: 'Use Node.js 12'