[ASTARTE-MESSAGE-HUB] message hub and sdk update
astarte-messahe-hub has been updated from 0.5.2 to 0.5.3 version. astarte-device-sdk has been updated from 0.5.1 to 0.5.2 version.
keep_alive and timeout parameters have been added in astarte-message-hub-config.toml
Edited by Andrea Da Col