chore: increase timeout for auth test

Author: miguelvelezsa

system-test/auth.test.ts

@@ -53,7 +53,7 @@ describe('google.auth', async () => {
       });
       const vms = result.data;
       assert.strictEqual(typeof vms.kind, 'string');
-    });
+    }).timeout(20000);
   });
 
   describe('new google.auth.GoogleAuth', async () => {