chore: Add changelog for beta.1 release (#1473)

Author: austinvalle

.changes/unreleased/NOTES-20250418-154446.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-beta2.
+    Managed resources now can support import by identity during plan and apply workflows. Managed resources that already support import via the
+    `schema.Resource.Importer` field still need to set an ID during import when an identity is provided. 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: 2025-04-18T15:44:46.554826-04:00
+custom:
+    Issue: "1463"