sentinel-minipot: release with new message types (v2.2.0)

Part of turris/sentinel/sentinel#24

Minipots are going to provide new message types to server and fix a lot of problems on server that way.

related:

• turris/sentinel/minipot!9 (merged)
• turris/sentinel/minipot!10 (merged)
• turris/sentinel/minipot!11 (merged)
• turris/sentinel/minipot!13 (merged)
• turris/sentinel/minipot#56 (closed)

related to server components:

• turris/ansible!357