fix: 아웃풋 결과 변수명 수정

Author: lvalentine6

.github/workflows/deploy-dev.yml

@@ -95,7 +95,7 @@ jobs:
           echo "ECS_CLUSTER=$(echo "$TF_OUTPUTS" | jq -r '.ecs_cluster_name.value')" >> $GITHUB_ENV
           echo "ECS_SERVICE=$(echo "$TF_OUTPUTS" | jq -r '.ecs_api_service_name.value')" >> $GITHUB_ENV
           echo "CONTAINER_NAME=$(echo "$TF_OUTPUTS" | jq -r '.ecs_api_container_name.value')" >> $GITHUB_ENV
-          echo "PRIVATE_IP=$(echo "$TF_OUTPUTS" | jq -r '.mysql_instance_private_ip.value')" >> $GITHUB_ENV
+          echo "PRIVATE_IP=$(echo "$TF_OUTPUTS" | jq -r '.ec2_private_ip.value')" >> $GITHUB_ENV
 
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4