Updated refresh endpoint in __init__.py (#336)

Author: fbuchacher

tgtg/__init__.py

@@ -17,7 +17,7 @@
 AUTH_BY_EMAIL_ENDPOINT = "auth/v5/authByEmail"
 AUTH_POLLING_ENDPOINT = "auth/v5/authByRequestPollingId"
 SIGNUP_BY_EMAIL_ENDPOINT = "auth/v5/signUpByEmail"
-REFRESH_ENDPOINT = "auth/v5/token/refresh"
+REFRESH_ENDPOINT = "token/v1/refresh"
 ACTIVE_ORDER_ENDPOINT = "order/v8/active"
 INACTIVE_ORDER_ENDPOINT = "order/v8/inactive"
 CREATE_ORDER_ENDPOINT = "order/v8/create/"