Second Astarte v1.2.1 release candidate.

Changes since v1.2.1-rc.0

Fixed

• [astarte_realm_management] Bug where devices got stuck in the "in deletion" status: #1493.
• [astarte_data_updater_plant] Correctly reconnect to AMQP after a connection loss
• [astarte_data_updater_plant] Fix possible crash when sending data on interface-specific volatile triggers