The v2.0 release contains backwards-incompatible changes.
This update requires upgrading the minimum provider version to 4.79.
In 4.X, the default value for rule.rate_limit_options.enforce_on_key is ALL. In 5.X this field no longer has a default value. If you need All you will need to set it explicitly. See Rule 2 in examples/security-policy-all folder for reference.