Switch PBKDF2 to using SHA256 with 4096 rounds
Switch PBKDF2 to using SHA256 with 4096 rounds

hashicorp/memberlist,rbg/memberlist,jsternberg/memberlist,oldmantaiter/memberlist,atomx/memberlist,hashicorp/memberlist,aybabtme/memberlist,jsternberg/memberlist,oldmantaiter/memberlist,atomx/memberlist,rbg/memberlist,42wim/memberlist,aybabtme/memberlist,42wim/memberlist