Yeah, a little odd...
Checking the table and after verifying the primary key updating db_version did the trick.
If someone else is going through the same update process: i hit the same problem with another table "glo_glossaries" a little later in the update-process. Was update step 5045 > 5046.
https://github.com/ILIAS-eLearning/ILIAS/blob/release_5-2/setup/sql/dbupdate_04.php#L18005
Thanks a lot for your answers!
Checking the table and after verifying the primary key updating db_version did the trick.
If someone else is going through the same update process: i hit the same problem with another table "glo_glossaries" a little later in the update-process. Was update step 5045 > 5046.
https://github.com/ILIAS-eLearning/ILIAS/blob/release_5-2/setup/sql/dbupdate_04.php#L18005
Thanks a lot for your answers!