Update changelog

Author: hc-github-team-tf-provider-devex

.changes/0.28.0.md

@@ -0,0 +1,11 @@
+## 0.28.0 (May 21, 2025)
+
+BREAKING CHANGES:
+
+* tfprotov5+tfprotov6: Removed temporary `ProviderServerWithResourceIdentity` interface type. Use `ProviderServer` instead. ([#516](https://github.com/hashicorp/terraform-plugin-go/issues/516))
+* tfprotov5+tfprotov6: `GetResourceIdentitySchemas` and `UpgradeResourceIdentity` RPC calls are now required in `ProviderServer` and `ResourceServer`. Implementations that don't support resource identity can return empty responses from the `GetResourceIdentitySchemas` method and an error message the `UpgradeResourceIdentity` method. ([#516](https://github.com/hashicorp/terraform-plugin-go/issues/516))
+
+NOTES:
+
+* all: To prevent compilation errors, ensure your Go module is updated to at least [email protected], [email protected], terraform-plugin-sdk/[email protected], and [email protected] before upgrading this dependency. ([#516](https://github.com/hashicorp/terraform-plugin-go/issues/516))
+

.changes/unreleased/BREAKING CHANGES-20250521-145243.yaml

@@ -1,3 +1,14 @@
+## 0.28.0 (May 21, 2025)
+
+BREAKING CHANGES:
+
+* tfprotov5+tfprotov6: Removed temporary `ProviderServerWithResourceIdentity` interface type. Use `ProviderServer` instead. ([#516](https://github.com/hashicorp/terraform-plugin-go/issues/516))
+* tfprotov5+tfprotov6: `GetResourceIdentitySchemas` and `UpgradeResourceIdentity` RPC calls are now required in `ProviderServer` and `ResourceServer`. Implementations that don't support resource identity can return empty responses from the `GetResourceIdentitySchemas` method and an error message the `UpgradeResourceIdentity` method. ([#516](https://github.com/hashicorp/terraform-plugin-go/issues/516))
+
+NOTES:
+
+* all: To prevent compilation errors, ensure your Go module is updated to at least [email protected], [email protected], terraform-plugin-sdk/[email protected], and [email protected] before upgrading this dependency. ([#516](https://github.com/hashicorp/terraform-plugin-go/issues/516))
+
 ## 0.27.0 (May 16, 2025)
 
 NOTES: