Fix: Substitute any with Buffer

node/node.d.ts

@@ -1057,7 +1057,7 @@ declare module "crypto" {
         update(data: any, input_encoding?: string): Hmac;
         digest(encoding: 'buffer'): Buffer;
         digest(encoding: string): any;
-        digest(): any;
+        digest(): Buffer;
     }
     export function createCipher(algorithm: string, password: any): Cipher;
     export function createCipheriv(algorithm: string, key: any, iv: any): Cipher;