chore: update spec.types.ts from upstream (#1888)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

packages/core/src/types/spec.types.ts

@@ -3,7 +3,7 @@
  *
  * Source: https://github.com/modelcontextprotocol/modelcontextprotocol
  * Pulled from: https://raw.githubusercontent.com/modelcontextprotocol/modelcontextprotocol/main/schema/draft/schema.ts
- * Last updated from commit: 838d6f69055f1d14400d67a47eb1d76207c7c34b
+ * Last updated from commit: 5c25208be86db5033f644a4e0d005e08f699ef3d
  *
  * DO NOT EDIT THIS FILE MANUALLY. Changes will be overwritten by automated updates.
  * To update this file, run: pnpm run fetch:spec-types
@@ -1848,6 +1848,7 @@ export interface Task {
 
     /**
      * Actual retention duration from creation in milliseconds, null for unlimited.
+     * @nullable
      */
     ttl: number | null;
 
@@ -2628,6 +2629,8 @@ export interface CompleteResult extends Result {
     completion: {
         /**
          * An array of completion values. Must not exceed 100 items.
+         *
+         * @maxItems 100
          */
         values: string[];
         /**