chore: update OpenAPI specs from architect-eng/architect@576e53e

Author: github-actions[bot]

services/external-actor-gateway-service/openapi.yaml

@@ -722,6 +722,10 @@ paths:
           required: false
           schema:
             type: string
+            enum:
+              - archived
+              - draft
+              - published
   /v0/page_groups/{page_group_id}:
     get:
       description: Retrieve a specific page group by ID.