updated testnet ping-pong contract address

src/config/config.testnet.ts

@@ -3,7 +3,7 @@ import { EnvironmentsEnum } from 'types';
 export * from './sharedConfig';
 
 export const contractAddress =
-  'erd1qqqqqqqqqqqqqpgqq3qsdxf55rlz5ka8mw3jdnacm8dlkuy09l5ql0wrlm';
+  'erd1qqqqqqqqqqqqqpgqfu2wwk9vjd6rnvu38vyushh67dtdkuvy9l5q3wkk6r';
 export const API_URL = 'https://testnet-template-api.multiversx.com';
 export const sampleAuthenticatedDomains = [API_URL];
 export const environment = EnvironmentsEnum.testnet;