Redis licensing change

[wwuck]

Describe the bug

Redis has changed their license away from 3-clause BSD. Is the icingadb-redis package still usable under the new license?

redis/redis#13157

[pdolinic]

The icingadb-redis package is downstream anways so it has the old license, they could just wait for the new fork project to take off which should be here in no time, like it happend on all the other projects before

[lippserd]

We're in contact with Redis whether and how we're affected by the licensing change and decide next steps based on that. We keep you posted.