fix: incorrect port tunnelled for HTTP requests

Author: gratestas

.github/workflows/deploy-staging.yml

@@ -48,7 +48,7 @@ jobs:
       - name: Start ngrok tunnel for Graph Node
         run: |
           ngrok authtoken ${{ secrets.NGROK_AUTH_TOKEN }}
-          ngrok http 8020 > /dev/null &
+          ngrok http 8000 > /dev/null &
 
       - name: Install jq
         run: sudo apt-get install -y jq