fix(types): add missing token-counting-2024-11-01

Author: RobertCraigie

src/resources/beta/beta.ts

@@ -57,7 +57,8 @@ export type AnthropicBeta =
   | 'message-batches-2024-09-24'
   | 'prompt-caching-2024-07-31'
   | 'computer-use-2024-10-22'
-  | 'pdfs-2024-09-25';
+  | 'pdfs-2024-09-25'
+  | 'token-counting-2024-11-01';
 
 export interface BetaAPIError {
   message: string;