Issue #3437325 by narendraR, phenaproxima, alexpott, Wim Leers: Add validation constraints to system.date

Issue #3427564 by phenaproxima, Wim Leers, alexpott, omkar.podey, Berdir, smustgrave, larowlan: Require `langcode: …` only for simple config that contains translatable values

Issue #540008 by kristiaanvandeneynde, Spokje, daffie, clayfreeman, alexpott, eelkeblok, michaelfavia, ianthomas_uk, zaporylie, johnwebdev, abhisekmazumdar, anmolgoyal74, greggles, quietone, shaal, catch, rivimey, AaronMcHale, Berdir, ndf, xjm, finne, Wim Leers, esolitos, heddn, webchick, Bojhan, andypost, efpapado, benjifisher, lauriii, Gábor Hojtsy, moshe weitzman, harings_rob: Add a container parameter that can remove the special behavior of UID#1

Issue #3402294 by mstrelan, quietone, dww, smustgrave: Fix strict type errors: Convert FormattableMarkup to strings (complex replacement) in core Kernel tests

Issue #2862702 by larowlan, hswong3i, mohit_aghera, perfectcu.be, markhalliwell, mxr576, dscl, alexpott, smustgrave: PrepareModulesEntityUninstallForm::formTitle does not exist

Issue #1170362 by alexpott, catch, pillarsdotnet, sun, jofitz, geerlingguy, steinmb, tresti88, DamienMcKenna, dpovshed, imclean, bradjones1, mErilainen, David_Rothstein, KarenS, BTMash, rickmanelius, Anonymous, smustgrave, Wim Leers, kreynen, webchick, websiteworkspace, phenaproxima, Kiphaas7, bbrala: Install profile is disabled for lots of different reasons and core doesn't allow for that

Issue #3413949 by andypost, quietone, Spokje, taraskorpach, smustgrave, catch, Wim Leers, DanielVeza: Move some Action plugins to Action module

Revert "Issue #3413949 by andypost, quietone, Spokje, taraskorpach, smustgrave, Wim Leers, DanielVeza: Move some Action plugins to Action module"

This reverts commit 63a2ba06.

Issue #3413949 by andypost, quietone, Spokje, taraskorpach, smustgrave, Wim Leers, DanielVeza: Move some Action plugins to Action module

Issue #3420742 by quietone, sakthi_dev, BramDriesen: Fix words in test string by changing the string

Issue #2942001 by dimitriskr, alexpott, gaurav.kapoor, smustgrave, andypost, almaudoh: Deprecate ThemeHandlerInterface::rebuildThemeData() and use extension.list.theme service instead

Issue #3420583 by mondrake: Change ConfigEntityValidationTestBase::providerInvalidMachineNameCharacters and family to static

Issue #3112284 by Spokje, Bhanu951, acbramley, mpdonadio, mondrake, quietone, adityasingh, andypost, JeroenT, vladbo, pifagor, daffie, voleger: Replace REQUEST_TIME in Kernel tests

Issue #3353210 by mondrake, PrabuEla, Spokje: [PHPUnit 10] @dataProvider methods must be declared static and public

Issue #2366129 by andypost, stefan.r, smustgrave, vacho: RegisterStreamWrappersPass and other have broken compiler pass for multiple tags

Issue #3113971 by Spokje, mondrake, acbramley, phenaproxima, andypost, murilohp, mpdonadio, ravi.shankar, pavnish, pifagor, vladbo, JeroenT, voleger, Taran2L: Replace REQUEST_TIME in services

Issue #3397491 by borisson_, phenaproxima, Wim Leers, smustgrave: Add validation constraints to core.date_format.

Issue #3332593 by phenaproxima, Wim Leers, borisson_, lauriii, tim.plunkett: Adopt PluginExists validator in relevant places

Issue #3189301 by Spokje, xjm, smustgrave: Use \Psr\Http\Client\ClientExceptionInterface instead of \GuzzleHttp\Exception\TransferException

Issue #3342489 by _shY, smustgrave, longwave, Wim Leers: Add default value for mail_notification in site.system config

Issue #3402295 by mstrelan, dww, smustgrave: Fix strict type errors in kernel tests: Add casts and fix types where needed

Issue #2484991 by znerol, voleger, andypost, dww, anmolgoyal74, markdorison, ankithashetty, larowlan, daffie, alexpott: Add the session to the request in KernelTestBase, BrowserTestBase, and drush

Revert "Issue #2484991 by znerol, voleger, andypost, dww, anmolgoyal74, markdorison, ankithashetty, daffie, alexpott, larowlan: Add the session to the request in KernelTestBase, BrowserTestBase, and drush"

This reverts commit 48a7cf12.

Issue #2484991 by znerol, voleger, andypost, dww, anmolgoyal74, markdorison, ankithashetty, daffie, alexpott, larowlan: Add the session to the request in KernelTestBase, BrowserTestBase, and drush