2.548

This is an automatically generated changelog draft for Jenkins weekly releases.
See https://www.jenkins.io/changelog/2.548/ for the official changelog for this release.

🚀 New features and improvements

• API tokens with expiration date (#23859) @mawinter69
• Add online help for the “Remove last build” build discarder option (#26153) @AmoghParmar

🐛 Bug fixes

• [JENKINS-76249] Fix form submission when a dropdown changes and the back end response is slow (#26161) @jtnord
• Fix temporary offline state of computer is lost on config submit (#26154) @mawinter69
• Fix sidebar navigation for non-ASCII localized section headers (#26068) @AmoghParmar

👷 Changes for plugin developers

• Migrate code base to Java 21 (#26075) @strangelookingnerd