Set latest version to 2025-03-26

Author: mattt

Sources/MCP/Base/Versioning.swift

@@ -4,8 +4,8 @@ import Foundation
 /// following the format YYYY-MM-DD, to indicate
 /// the last date backwards incompatible changes were made.
 ///
-/// - SeeAlso: https://spec.modelcontextprotocol.io/specification/2024-11-05/basic/versioning/
+/// - SeeAlso: https://spec.modelcontextprotocol.io/specification/2025-03-26/
 public enum Version {
     /// The current protocol version.
-    public static let latest = "2024-11-05"
+    public static let latest = "2025-03-26"
 }