v0.31.6-ls122

LinuxServer Changes:

Remove unused requirement, as of release 0.31.0.
bookstack Changes:

Links

• Update instructions

Full List of Changes

This release contains the following fixes and changes:

• Fixed issue thrown when deleting shelves from the recycle bin. Thanks to @i4j5. (#2543, #2534, #2530)
• Fixed issue where restoring a revision would restore as HTML instead of Markdown. (#2496)