v1.8.0

[FEAT] add `global_replication_group_id` support @miguelzenteno (#253)

## what

• adds support for the global_replication_group_id attribute
• updates code to set other attributes to null when global_replication_group_id is set.

why

• We want to use elasticache_global_replication_group along side this module to manage global datastores
• When this attribute is set, the cluster will be set as a secondary for the global datastore

references

• https://registry.terraform.io/providers/hashicorp/aws/5.86.0/docs/resources/elasticache_global_replication_group