Replace failing grep with builtin query

Fixes: aws/aws-sam-cli#5940
Script was failing for MacOS's default grep command

nodejs18.x/full-stack/{{cookiecutter.project_name}}/deploy_frontend.sh

@@ -37,7 +37,7 @@ npm run build && cd dist/
 aws s3 sync . s3://$s3_bucket_name/
 
 # Create cloudfront invalidation and capture id for next step
-invalidation_output=$(aws cloudfront create-invalidation --distribution-id $cloudfront_distribution_id --paths "/*")
+invalidation_output=$(aws cloudfront create-invalidation --distribution-id $cloudfront_distribution_id --paths "/*" --query "Invalidation.Id" --output text)
 invalidation_id=$(echo "$invalidation_output" | grep -oP '(?<="Id": ")[^"]+')
 
 # Wait for cloudfront invalidation to complete