Log Message:
kservice: update to 5.108.0

5.100
  Do not warn if KService("") is instantiated
5.101
  KApplicationTrader: New method setPreferredService
5.102
  Allow accessing custom properties of KServiceActions
  Replace QVariant::Type with QMetaType::Type
  Deprecate KService::dbusStartupType
5.104
  Fix deprecation ifdef
  Deprecate KService::serviceTypes and KService::hasServiceType
  application: Add X-SnapInstanceName
  Add method to query supported protocols for a service
5.106
  Fix querying actions for service of a service action
  Parse actions last when creating a service