Change license from BSD-3 to dual RSALv2+SSPLv1

There's two other active threads,

https://news.ycombinator.com/item?id=39772562 ("Redis Adopts Dual Source-Available Licensing", 19 hours ago, 141 comments)

https://news.ycombinator.com/item?id=39775332 ("Redis License Changed", 11 hours ago, 282 comments)

Can we change the title so it contains redis?

https://redis.com/blog/redis-adopts-dual-source-available-li...