Issue #3109556 by finnsky, nod_, longwave, effulgentsia, Ambient.Impact: Update from Yarn 1 to Yarn 4

Issue #3419734 by catch, nod_: [jQuery 4] jquery-form is unmaintained and not jQuery 4 compatible, fork it into core

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

Issue #3393557 by Wim Leers, Spokje, catch, smustgrave, niegowski, witeksocha: [upstream] Update CKEditor 5 to 40.0.0

Issue #3378890 by Wim Leers, mikesimmons, smustgrave, pmkanse, witeksocha: Add the "Show Blocks" functionality that existed in CKEditor 4 and was added to CKEditor 5 38.1.0

Issue #2707291 by Utkarsh_33, lauriii, darvanen, samuel.mortenson, hooroomoo, komalk, narendraR, Vidushi Mehta, sasanikolic, droplet, smustgrave, yoroy, Bcwald, kostyashupenko, penyaskito: Disable body-level scrolling when a dialog is open as a modal

Issue #2662330 by Utkarsh_33, lauriii, hooroomoo, bnjmnm, tim.plunkett, Alan D., smustgrave, catch, mrweiner: Machine name generation is way too slow

Issue #3351619 by Gauravvvv, longwave, Spokje, mherchel, smustgrave: Update PostCSS and postcss-preset-env for Drupal 10.1

Issue #3227354 by JeroenT, bnjmnm, Wim Leers, jungle, VladimirAus, lauriii, RenatoG, nmangold, Gábor Hojtsy, el7cosmos, catch, mandclu, freelock, ckrina, witeksocha, Reinmar: Add support for ckeditor5-autoformat

Issue #3344087 by longwave, Gauravvvv, mherchel, catch: Update Stylelint and Prettier for Drupal 10.1 and use Prettier for formatting PostCSS

This reverts commit fd7e9253.