fix: prevent AMI name confusion attack

Author: michaelwittig

CONTRIBUTING.md

@@ -5,5 +5,5 @@ To update the ImageId map execute the following lines in your terminal:
 
 ```
 $ regions=$(aws ec2 describe-regions --query "Regions[].RegionName" --output text)
-$ for region in $regions; do id=$(aws --region $region ec2 describe-images --filters "Name=name,Values=amzn2-ami-hvm-2.0.20241113.1-x86_64-gp2" --query "Images[0].ImageId" --output "text"); printf "'$region':\n  ImageId: '$id'\n"; done
+$ for region in $regions; do id=$(aws --region $region ec2 describe-images --owner amazon --filters "Name=name,Values=amzn2-ami-hvm-2.0.20241113.1-x86_64-gp2" --query "Images[0].ImageId" --output "text"); printf "'$region':\n  ImageId: '$id'\n"; done
 ```