v6.0.0-BETA1

Changelog (v5.3.10...v6.0.0-BETA1)

• feature #43898 Make the abstract Voter class implement CacheableVoterInterface (javiereguiluz)
• feature #42471 Add generic types to traversable implementations (derrabus)
• feature #42177 Implement ADM strategies as dedicated classes (derrabus)
• feature #43066 Cache voters that will always abstain (jderusse)
• feature #41321 Remove deprecate session service (jderusse)
• feature #42650 make TokenInterface::getUser() nullable to tell about unauthenticated tokens (nicolas-grekas)
• feature #42644 Make AuthenticationTrustResolverInterface::isAuthenticated() non-virtual (chalasr)
• feature #41613 Remove everything related to the deprecated authentication manager (wouterj)
• feature #42510 Deprecate remaining anonymous checks (wouterj)
• feature #42423 Deprecate AnonymousToken, non-UserInterface users, and token credentials (wouterj)
• feature #42420 Deprecate legacy signatures (wouterj)
• feature #42198 Deprecate PassportInterface (chalasr)
• feature #42088 add return types and bump to v3 (nicolas-grekas)
• feature #42050 Deprecate TokenInterface::isAuthenticated() (chalasr)
• feature #41982 Remove getPassword() and getSalt() from UserInterface (chalasr)
• feature #41960 Remove legacy password encoders (chalasr)
• feature #41965 Deprecate "always authenticate" and "exception on no token" (wouterj)
• feature #41299 Remove Serializable implementations (derrabus)
• feature #41282 Bump Symfony 6 to PHP 8 (nicolas-grekas)