context_server: Update types to reflect latest protocol version (2025-03-26) (#32377)

This updates the `types.rs` file to reflect the latest version of the
MCP spec. Next up is making use of some of these new capabilities. Would
also be great to add support for [Streamable HTTP
Transport](https://modelcontextprotocol.io/specification/2025-03-26/basic/transports#streamable-http)

Release Notes:

- N/A

crates/context_server/src/protocol.rs

@@ -20,9 +20,10 @@ impl ModelContextProtocol {
     }
 
     fn supported_protocols() -> Vec<types::ProtocolVersion> {
-        vec![types::ProtocolVersion(
-            types::LATEST_PROTOCOL_VERSION.to_string(),
-        )]
+        vec![
+            types::ProtocolVersion(types::LATEST_PROTOCOL_VERSION.to_string()),
+            types::ProtocolVersion(types::VERSION_2024_11_05.to_string()),
+        ]
     }
 
     pub async fn initialize(