Ensure S3 encryption configuration is configured for AWS Glue Crawlers

Unencrypted S3 objects may expose sensitive customer data.

In AWS Console -

1. Sign in to AWS Console and go to the Glue Service dashboard.
2. In the navigation panel select security configurations.
3. Select the security configuration to edit.
4. Check if S3 encryption mode feature status is set to ENABLED.

In Terraform -

1. In the aws_glue_security_configuration resource, set 'encryption_configuration.s3_encryption.s3_encryption_mode' to 'ENABLED'.

References:
https://docs.aws.amazon.com/glue/latest/dg/encryption-security-configuration.html
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/glue_security_configuration#encryption_configuration