test(RequestClient): fixed to use actual axios

src/utils/createAxiosInstance.ts

@@ -0,0 +1,7 @@
+import axios from 'axios'
+import * as https from 'https'
+
+export const createAxiosInstance = (
+  baseURL: string,
+  httpsAgent?: https.Agent
+) => axios.create({ baseURL, httpsAgent })