Squish: Update language test

Danish and Ukrainian had been added a while ago, so add them to the
list of languages to check.

Change-Id: I92c507e3a567efa39d7295559af0fb16bbcd1bb6
Reviewed-by: Robert Loehning <robert.loehning@qt.io>

tests/system/suite_general/tst_installed_languages/testdata/languages.tsv

 "language"	"File"	"Exit"	"ISO"
 "Czech (CzechRepublic)"	"Soubor"	"Ukončit"	"cs_CZ"
+"Danish (Denmark)"	"Fil"	"Afslut"	"da_DK"
 "German (Germany)"	"Datei"	"Beenden"	"de_DE"
 "French (France)"	"Fichier"	"Quitter"	"fr_FR"
 "Japanese (Japan)"	"ファイル(F)"	"終了(X)"	"ja_JP"
 "Polish (Poland)"	"Plik"	"Zakończ"	"pl_PL"
 "Russian (%1)"	"Файл"	"Выход"	"ru_RU"
 "Slovenian (Slovenia)"	"Datoteka"	"Končaj"	"sl_SL"
+"Ukrainian (Ukraine)"	"Файл"	"Вийти"	"uk_UA"
 "Chinese (China)"	"文件(F)"	"退出(X)"	"zh_CN"
 "Chinese (Taiwan)"	"檔案(F)"	"離開(X)"	"zh_TW"