add changelog for beta

Author: austinvalle

.changes/unreleased/NOTES-20250403-121229.yaml

@@ -0,0 +1,8 @@
+kind: NOTES
+body: This beta pre-release continues the implementation of managed resource identity, which should now be used with Terraform v1.12.0-beta1.
+    Managed resources now can support import by identity during plan and apply workflows. Managed resources that already support import via the
+    `resource.ResourceWithImportState` interface will automatically pass-through identity data to the `Read` method. The `RequiredForImport` and
+    `OptionalForImport` fields on the identity schema can be used to control the validation that Terraform core will apply to the import config block.
+time: 2025-04-03T12:12:29.323193-04:00
+custom:
+    Issue: "1126"