v1.4.0

🚀 Enhancements

Upgrade default TLS Policy domain_endpoint_options_tls_security_policy @niels1voo (#219)

## what

Change the default value of domain_endpoint_options_tls_security_policy to "Policy-Min-TLS-1-2-2019-07"

why

AWS is sunsetting the current default in April 2026.

references

https://docs.aws.amazon.com/opensearch-service/latest/developerguide/infrastructure-security.html