Google Translate TTS (used in SIP call)

All,

I used successfully google translate for TTS anouncement in SIP calls whenever somsthing is going wrong at home while I am abroad.

In configurations.yaml I used:

tts:
  - platform: google_translate
    language: "de"
    base_url: http://nabucasa-url

Since one of the last updates (I guess it was 2023.7), I got the error:

[base_url] is an invalid option for [tts.google_translate].

So I went to the UI and configured google translate there.
Unfortunately there is no option of base_url and when I trigger a call I get a beep sound instead of the previously working anouncement.

Any suggestion. what I am missing here?