Issue #3319582 by mondrake, Spokje, longwave, mallezie: Fix calls to methods with too many parameters passed in

Issue #3162981 by murilohp, andypost, quietone, paulocs, lucienchalom, longwave, daffie, catch: [Symfony 6] Use Symfony\Component\HttpFoundation\InputBag where appropriate instead of ParameterBag

Issue #3209723 by murilohp, daffie, longwave, andypost: [Symfony 6] Symfony\Component\HttpKernel\HttpKernelInterface::MASTER_REQUEST is deprecated, use ::MAIN_REQUEST instead

Issue #3232082 by daffie, longwave, catch: [Symfony 6] Add "Response" type hint to methods that implement the method Symfony\Component\HttpKernel\HttpKernelInterface::handle()

Issue #2917331 by catch, martin107, Deepak Goyal, longwave, andypost, ravi.shankar, alexpott, daffie, larowlan: Decouple from Symfony CMF

Revert "Issue #2917331 by catch, martin107, Deepak Goyal, longwave, andypost, ravi.shankar, daffie, larowlan: Decouple from Symfony CMF"

This reverts commit 98eed2b1.

Issue #2917331 by catch, martin107, Deepak Goyal, longwave, andypost, ravi.shankar, daffie, larowlan: Decouple from Symfony CMF

Issue #3130341 by jungle, catch, longwave: Remove Drupal\Core\Update\UpdateKernel::fixSerializedExtensionObjects()

Issue #3037823 by alexpott, Berdir, amateescu: The system.theme.data key remains corrupted in state causing performance issues and is not used in >= 8.7

Issue #3032869 by alexpott, tim.plunkett, dww, tacituseu, Mixologic: \Drupal\Core\Update\UpdateKernel::fixSerializedExtensionObjects() caused test runs to double in duration

Issue #3031740 by alexpott, tmanhollan, catch, collinhaines: Updating to 8.6.8 or 8.6.9 with Drush 8 causes data loss via update_fix_compatibility()

Issue #3031128 by alexpott, TrevorBradley, indigoxela, catch, cilefen, larowlan, jibran: Update from 8.6.7 to 8.6.8 warnings - Drupal\Core\Extension\Extension has no unserializer

Issue #2937888 by dhruveshdtripathi, idebr, RoSk0, mohit1604, mfernea, borisson_: Fix 'Drupal.Commenting.DocComment.LongNotCapital' coding standard

Issue #2912169 by alexpott, tobiberlin, Berdir, dawehner, grahamC: Inject the argument resolver into HttpKernel::__construct

Issue #2955673 by msankhala, jenlampton: Text 'logged in as admin' in update.php message is ambiguous

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

Issue #2560521 by dawehner, plach, larowlan, lauriii, Xano, Wim Leers, catch, jhedstrom: Javascript does not work on beta 12 => HEAD update.php