Update French translation

Co-authored-by: Samantaz Fox <translator-weblate@samantaz.fr>

locales/fr.json

@@ -456,7 +456,7 @@
     "English (United Kingdom)": "Anglais (Royaume-Uni)",
     "Chinese (Taiwan)": "Chinois (Taiwan)",
     "Cantonese (Hong Kong)": "Cantonais (Hong Kong)",
-    "Interlingue": "Interlingua",
+    "Interlingue": "Occidental",
     "Italian (auto-generated)": "Italien (auto-généré)",
     "Vietnamese (auto-generated)": "Vietnamien (auto-généré)",
     "Russian (auto-generated)": "Russe (auto-généré)",