fix(kafka-mgmt/v1): update for kafka-mgmt/v1 SDK (#669)

Co-authored-by: app-services-ci <app-services-ci@users.noreply.github.com>

Author: app-services-ci

.openapi/kas-fleet-manager.yaml

@@ -1564,9 +1564,8 @@ components:
             type: string
           collections:
             type: array
-            items:
-              allOf:
-              - $ref: "#/components/schemas/ObjectReference"
+            items: # removed allOf to workaround this issue: https://github.com/microsoft/kiota/issues/2442
+              $ref: "#/components/schemas/ObjectReference"
     KafkaRequestPayload:
       description: Schema for the request body sent to /kafkas POST
       required: