nightly-bacebe26-ls269

CI Report:

https://ci-tests.linuxserver.io/linuxserver/beets/nightly-bacebe26-ls269/index.html

LinuxServer Changes:

Full Changelog: nightly-1d01689a-ls268...nightly-bacebe26-ls269

Remote Changes:

Add keep_synced option to lyrics plugin (#6538)

lyrics: Add keep_synced option to protect synced lyrics from

being overwritten

Adds a keep_synced config option and --keep-synced CLI flag to the
lyrics plugin. When enabled, tracks that already have synced lyrics are
skipped during fetching — even if force is set.

Motivation: Libraries with a mix of synced and plain lyrics can use
force to fill gaps without risking overwriting the higher-quality
synced entries.

Fixes: #5249

This is another widely requested issue with many reactions from users.