fix/credentials_leaking_in_logs

[JarbasAl]

TTS/STT credentials can be accidentally leaked in LOGS via Session in message.context

[goldyfruit]

All good.

Jan 24 08:57:15 rpi4b ovos-core[1274]: 2024-01-24 08:57:15.428 - skills - ovos_core.transformers:transform:61 - DEBUG - ovos-utterance-normalizer: {'client_name': 'ovos_dinkum_listener', 'source': 'audio', 'destination': ['skills'], 'transcription': 'what time is it', 'lang': 'en-us'}