v7.3.0-BETA1

Changelog (v7.2.6...v7.3.0-BETA1)

• feature symfony/symfony#50027 [Security] OAuth2 Introspection Endpoint (RFC7662) (@Spomky)
• feature symfony/symfony#59805 [Security] Improve DX of recent additions (@nicolas-grekas)
• feature symfony/symfony#59150 [Security] Allow using a callable with #[IsGranted] (@alexandre-daubois)
• feature symfony/symfony#59771 [Security] Add ability for voters to explain their vote (@nicolas-grekas)
• feature symfony/symfony#59562 [Security] Support hashing the hashed password using crc32c when putting the user in the session (@nicolas-grekas)
• feature symfony/symfony#59682 [Security] Deprecate UserInterface & TokenInterface's eraseCredentials() (@chalasr, @nicolas-grekas)
• feature symfony/symfony#48142 [Security][SecurityBundle] User authorization checker (@natewiebe13)