chore(client-transcribe-streaming): run integ tests in ts-jest

Author: trivikr

clients/client-transcribe-streaming/jest.integ.config.js

@@ -2,5 +2,5 @@ const base = require("../../jest.config.base.js");
 
 module.exports = {
   ...base,
-  testMatch: ["**/*.integ.spec.js"],
+  testMatch: ["**/*.integ.spec.ts"],
 };