Add Southern Sami, and Lule Sami to language list under the ISO-639-3 standard (#21262)

* Add sme, smj, and sma ISO-639-3 language codes

* Remove sme in ISO-639-3

app/helpers/languages_helper.rb

@@ -197,6 +197,8 @@ module LanguagesHelper
     ldn: ['Láadan', 'Láadan'].freeze,
     lfn: ['Lingua Franca Nova', 'lingua franca nova'].freeze,
     sco: ['Scots', 'Scots'].freeze,
+    sma: ['Southern Sami', 'Åarjelsaemien Gïele'].freeze,
+    smj: ['Lule Sami', 'Julevsámegiella'].freeze,
     tok: ['Toki Pona', 'toki pona'].freeze,
     zba: ['Balaibalan', 'باليبلن'].freeze,
     zgh: ['Standard Moroccan Tamazight', 'ⵜⴰⵎⴰⵣⵉⵖⵜ'].freeze,