Issue #3442259 by catch, quietone, dww: Reduce time of Migrate Upgrade tests by not outputting the logs by default

Issue #3239012 by Wim Leers, quietone, smustgrave, xjm, catch, longwave: [11.x] Remove the CKEditor 4 upgrade path

Issue #3082211 by quietone, Pooja Ganjage, smustgrave, danflanagan8, Spokje, benjifisher, mikelutz, Wim Leers: Migrate UI upgrade tests should provide the complete log

Issue #3399123 by Spokje, longwave, smustgrave: Upgrade JavaScript dependencies to latest minor/patch releases

Issue #2441373 by twistor, vsujeetkumar, marvil07, eporama, daffie, joseph.olstad, alvar0hurtad0, jibran, longwave, joelpittet, smustgrave, alexpott: Upgrade tests to HTML5

Issue #2441811 by longwave, daffie, andypost, edurenye, lauriii, joseph.olstad, Wim Leers, smustgrave, effulgentsia, alexpott, larowlan, chx, jibran: Upgrade filter system to HTML5

Issue #2869568 by Berdir, dagmar, quietone, vijaycs85, catch, tstoeckler, xjm, amateescu: Add upgrade path to clean up deleted revisions from node_field_revision

Issue #2706241 by mglaman, Spokje, Chi, DamienMcKenna, JeroenT, ankithashetty, lslinnet, george.karaivanov, Rade, rteijeiro, nplowman, Wim Leers: AccessAwareRouter does not respect HTTP method

Issue #3356929 by Wim Leers, kevinquillen: Provide an upgrade path from "codesnippet" contrib CKEditor 4 plugin to "CodeBlock" core CKEditor 5 plugin

Issue #3159896 by mherchel, awset, srishtiiee, Gauravvvv, _utsavsharma, lauriii, pameeela, bnjmnm, Kristen Pol, kiran.kadam911, pradeepjha, Sakthivel M: Select form field values are hidden at narrow screen widths in Claro theme

Issue #3327785 by Spokje, xjm, andypost, rpayanm: Upgrade Symfony dependencies with minor version bump

Issue #3255637 by Liam Morland, 3li, joegraduate, rivimey, alexpott, mondrake, ravi.shankar, hswong3i, ameymudras, longwave, Anchal_gupta, neclimdul, Martijn de Wit, sgourebi, pradhumanjainOSL, gambry, kim.pepper: Deprecate NULL values in Html::escape(), ::decodeEntities(), and FormattableMarkup::placeholderFormat() to make it easier to upgrade to PHP 8

Issue #3314511 by Wim Leers: CKEditor 4 → 5 upgrade path may trigger warnings in some edge cases, making upgrade path tests impossible

Issue #3222797 by Wim Leers, nod_, bnjmnm, larowlan, mpp, Luke.Leber, lauriii, DanielVeza, Reinmar: Upgrade path from CKEditor 4's StylesCombo to CKEditor 5's Style

Issue #3298396 by andypost, Vighneshh, ameymudras, Spokje: Upgrade composer requirement to 2.3.6 to prevent warnings on PHP 8.2

Issue #3298199 by andypost: Upgrade phpstan/phpstan to 1.8.2 for support of PHP 8.2 #[\AllowDynamicProperties] attribute

Issue #3270831 by Wim Leers, bnjmnm, xjm, catch: Make the CKEditor 4 → 5 upgrade path work even when the CKEditor 4 module is removed

Issue #3273983 by Wim Leers, ifrik, lauriii: Do not assume that plugin supporting <tag attr> also supports <tag> in  SourceEditingRedundantTags and upgrade path

Issue #3269657 by hooroomoo, Wim Leers: [drupalMedia] The CKEditor 4 → 5 upgrade path for the media_embed filter should not forcefully allow the `data-view-mode` attribute on `<drupal-media>`

Issue #3273325 by Dom., Wim Leers, andregp, ifrik: CKE5 and contrib: better "next action" description on upgrade path messages

Issue #3273527 by joevagyok, Wim Leers: Upgrade path never configures the ckeditor5_heading plugin to allow <h1>

Issue #3268174 by Wim Leers, nod_, catch, lauriii: Bug in CKE 4 → 5 upgrade path "format" does not always map to "heading", it could map to "codeBlock" too, or both, or neither

Issue #3261743 by Spokje: Remove @composer require phpspec/prophecy-phpunit:^2 from "drupal-phpunit-upgrade"