[dictionaries] Adding French as equally likely language for Guernesey, which will effectively exclude it from the language training data (doesn't matter since there's already enough English/French addresses).

resources/language/countries/road_sign_languages.tsv

@@ -34,6 +34,8 @@ fj	en	1
 fi	fi	1
 fi	sv	0
 ge	ru	0
+gg	en	1
+gg	fr	1
 gq	es	1
 gu	en	1
 ht	fr	1