* [:backend:`5615`] Fixed the ZGW API's registration reporting as failure when case
  properties are used.
* Fixed Ogone Legacy merchant ID labels not being displayed in dropdown.
* [:backend:`5507`] Fixed mimetype detection for .msg files.
* [:backend:`5624`] Fixed broken StUF-BG request for children (family members)
  prefill request.
* [:backend:`5464`] Fixed a crash that occurred when incomplete options were used in
  JSON schema generation.