Merge main into releases/v4 - #4257

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: fwilhe2/setup-kotlin@9c245a6425255f5e98ba1ce6c15d31fce7eca9da. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/