Release 25.6.1

This release contains the following improvements:

• Ensures the server version is accurately displayed when deploying using Docker
• Fixes a rare crash when selecting dates
• Upgrades the Docker image to use Node.js version 20

<!--truncate-->

Docker tag: 25.6.1

Bugfix

• #5093 Fix server version display on docker images — thanks @MikesGlitch
• #5095 Fix crash when datepicker deselected with no date set — thanks @matt-fidd

Maintenance

• #5091 Update Dockerfiles to use Node.js 20 — thanks @matt-fidd