Potential Bug report -> Have you recently changed timestamp type of ServerMessage? I checked that [ts](https://github.com/VapiAI/server-sdk-typescript/blob/main/src/api/types/ServerMessageEndOfCallReport.ts)/[java](https://github.com/VapiAI/server-sdk-java/blob/main/src/main/java/com/vapi/api/types/ServerMessageEndOfCallReport.java)/[python](https://github.com/VapiAI/server-sdk-python/blob/main/src/vapi/types/server_message_end_of_call_report.py) server-sdk's have string type but I get int, and type validation does not work.

/**
   * This is the ISO-8601 formatted timestamp of when the message was sent.
   */
  @IsOptional()
  @IsString()
  timestamp?: string;

No we didn't made any change, can you share the call ID for which your received int timestamp value?