maicol/add_validation_limits

Improve ETL schema so it prevents failures in the deployment.

before	after

Glue fails

• Error: expected length of description to be in the range (0 - 2048),
• Error: expected length of storage_descriptor.0.columns.13.comment to be in the range (0 - 255)

https://git.iwoca.co.uk/iwoca/etl/jobs/glue-templates/-/jobs/13291159