Update yml

Author: nikhilwoodruff

.github/workflows/deploy.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
         with:
-          role-to-assume: ${{ secrets.AWS_ROLE_ARN }}
+          role-to-assume: ${{ vars.AWS_ROLE_ARN }}
           aws-region: ${{ vars.AWS_REGION }}
 
       - name: Login to Amazon ECR