feat: Refresh SDK custom-code seals after updater changes

Stainless-Generated-From: fc6241d7fc4f6a072e22dfb45046d35195fdfc08

Author: kernel-internal[bot]

src/resources/api-keys.ts

@@ -136,6 +136,12 @@ export interface APIKey {
    */
   expires_at: string | null;
 
+  /**
+   * When the API key last authenticated a request, accurate to within about 20
+   * minutes. Null if the key has not been used since last-use tracking began.
+   */
+  last_used_at: string | null;
+
   /**
    * Masked version of the API key
    */