### What happened? In the specification for latest (0.3.0) there is a field called `icon_url` as part of the AgentCard, however this is missing in the protobuf files. https://a2a-protocol.org/latest/specification/#55-agentcard-object-structure ``` /** An optional URL to an icon for the agent. */ iconUrl?: string; ``` ### Relevant log output ```shell ``` ### Code of Conduct - [x] I agree to follow this project's Code of Conduct