The 20.0.0 release of SQL DB is a backward incompatible release.
This update requires upgrading the minimum provider version 5.12 and minimum Terraform version 1.3
In mysql and postgresql sub-module output instance_server_ca_cert and replicas_instance_server_ca_certs are also marked as sensitive
In mysql and postgresql sub-module default value for zone is changed from "us-central1-a" to null