Issue #3338328 by Spokje, andypost, longwave, effulgentsia, jungle, catch, smustgrave, Wim Leers: Update to Symfony 6.3

Issue #2238561 by alexpott, dawehner, andypost, bradjones1, ridhimaabrol24, jofitz, eiriksm, Darren Oh, kalyansamanta, znerol, neclimdul, catch, pwolanin: Use the default PHP session ID instead of generating a custom one

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2256257 by znerol, cosmicdreams | YesCT: Move token seed in SessionManager in isSessionObsolete() and regenerate()  to the MetadataBag.