Update OpenAPI specs

This update comes directly from primary source repo

Private OpenAPI repo SHA: bc0e3fafa37c0b9eada5fcb0c7619c4cc96b99c2

Primary source repo SHA: 07099bda830e47f5231abb0cc6284ab5af3db793

Author: actions-user

source_specs/client_rest.yaml

@@ -6074,12 +6074,18 @@ components:
       description: A historical representation of a series of chat messages a user had with Glean Assistant.
       allOf:
         - $ref: '#/components/schemas/ChatMetadata'
+        - $ref: '#/components/schemas/PermissionedObject'
       properties:
         messages:
           type: array
           items:
             $ref: '#/components/schemas/ChatMessage'
           description: The chat messages within a Chat.
+        roles:
+          type: array
+          items:
+            $ref: '#/components/schemas/UserRoleSpecification'
+          description: A list of roles for this chat session explicitly granted.
     ChatResult:
       properties:
         chat: