Update firebase-vertexai/src/main/kotlin/com/google/firebase/vertexai/LiveGenerativeModel.kt

Co-authored-by: Daymon <[email protected]>

Author: VinayGuthal

firebase-vertexai/src/main/kotlin/com/google/firebase/vertexai/LiveGenerativeModel.kt

@@ -89,6 +89,7 @@ internal constructor(
    * @throws [ServiceConnectionHandshakeFailedException] If the client was not able to establish a
    * connection with the server.
    */
+  @OptIn(ExperimentalSerializationApi::class)
   public suspend fun connect(): LiveSession {
     val clientMessage =
       BidiGenerateContentClientMessage(