[rest_api] exposed update_volume function
[rest_api] exposed update_volume function

insomnia-lab/libreant,leophys/libreant,leophys/libreant,leophys/libreant,ael-code/libreant,ael-code/libreant,insomnia-lab/libreant,insomnia-lab/libreant,insomnia-lab/libreant,leophys/libreant,ael-code/libreant,ael-code/libreant