CMake: update language list

The list suggests things are not-so-good because of recently-pushed
changes to the translations and teams haven't had time to react.
There are also some new duplicate languages.

CMakeLists.txt

@@ -132,15 +132,14 @@ set( CALAMARES_DESCRIPTION_SUMMARY
 # NOTE: update these lines by running `txstats.py`, or for full automation
 #       `txstats.py -e`. See also
 #
-# Total 75 languages
-set( _tx_complete az az_AZ be ca de fi_FI he hi hr ja ko lt pt_BR
-    pt_PT sq sv tr_TR uk vi zh_CN zh_TW )
-set( _tx_good as ast ca@valencia cs_CZ da es fa fr fur hu it_IT ml
-    nl ru sk tg )
-set( _tx_ok ar bg bn el en_GB es_MX es_PR et eu gl id is mr nb pl
-    ro sl sr sr@latin th )
-set( _tx_incomplete eo fr_CH gu id_ID ie kk kn lo lv mk ne ne_NP si
-    te ur uz zh )
+# Total 77 languages
+set( _tx_complete ca lt pt_PT sq uk zh_TW )
+set( _tx_good as az az_AZ be ca@valencia cs_CZ da de fi_FI fr fur
+    he hi hr it_IT ja ko ml nl pt_BR ru sk sv tg tr_TR vi zh_CN )
+set( _tx_ok ar ast bg bn el en_GB es es_MX es_PR et eu fa gl hu id
+    is mr nb pl ro sl sr sr@latin th )
+set( _tx_incomplete eo es_PE fr_CH gu id_ID ie kk kn lo lv mk ne
+    ne_NP ru_RU si te ur uz zh )
 
 ### Required versions
 #