fix warning for internal errors

__tests__/installer.test.ts

@@ -687,7 +687,7 @@ describe('setup-node', () => {
       await main.run();
 
       expect(warningSpy).toHaveBeenCalledWith(
-        'An internal error has occurred in cache backend. Please check https://www.githubstatus.com/ for any ongoing issue in actions.'
+        'The runner was not able to contact the cache service. Caching will be skipped'
       );
     });
   });