Fix id token get endpoint

backend/app/main.py

@@ -28,6 +28,7 @@ def create_ocpp_app():
 def create_app():
     app = FastAPI(
         title="simple-ocpp-cs",
+        version="0.2.0",
         summary="Simple implementation of a basic OCPP 2.0.1 compliant central system (backend) for EV charging stations",
         responses={404: {"description": "Not found"}},
     )