ci: fix github output

Author: osiastedian

.github/workflows/aws.yml

@@ -74,7 +74,7 @@ jobs:
       run: |
         docker build -t $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG .
         docker push $ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG
-        echo "{image}={$ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG}" >> $GITHUB_OUTPUT
+        echo "image=$ECR_REGISTRY/$ECR_REPOSITORY:$IMAGE_TAG" >> $GITHUB_OUTPUT
 
     - name: Fill in the new image ID in the Amazon ECS task definition
       id: task-def