Log Message:
ki18n: update to 5.108.0

5.99
  Add useful info to warning
  Really support :usagetip cue
  Warn if the domain is empty
  Mark codeLanguage as const
  KCatalog: make setting LANGUAGE env var more robust
5.100
  Try fixing build on Windows mingw
  Add missing <cerrno> include
5.101
  kcountrysubdivisiontest fix "Missing reference in range-for"
  Set the LANG to an actual valid locale
5.104
  KI18nLocaleData target: add include dir for version header to interface
  Load translations for application-specific language also on Win and Mac
5.105
  Use compat headers with deprecation warnings for KuitMarkup/kuitmarkup.h
  cmake: Do not rebuild po and ts files if they did not change