Increase Prod appengine instances to 2

.github/workflows/deploy-frontends-to-production.yml

@@ -279,7 +279,7 @@ jobs:
           echo "  - .env.yaml" >> app.yaml
           echo "automatic_scaling:" >> app.yaml
           echo "  cool_down_period_sec: 80" >> app.yaml
-          echo "  min_num_instances: 1" >> app.yaml
+          echo "  min_num_instances: 2" >> app.yaml
           echo "  max_num_instances: 10" >> app.yaml
           echo "  cpu_utilization:" >> app.yaml
           echo "    target_utilization: 0.8" >> app.yaml