Version 4.7-1 of dav4tbsync is marked for autoremoval from testing on Mon 30 Oct 2023. It depends (transitively) on sexpp, affected by #1050329. You should try to prevent the removal by fixing these RC bugs.
Last update: 2023-10-03
Standards version of the package is outdated.
The package should be updated to follow the last version of Debian Policy
(Standards-Version 4.6.2 instead of