Fix preference loss when backup archives share a restore store - #519

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-java@v4, gradle/actions/setup-gradle@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Failed to restore gradle-home-v1|Linux|build[021e112eabc34cc6e59e66a782199398]-f75f1964b10880b8d9019a341972a4dfee9a4b3c: Error: Cache service responded with 400