Update Italian language (#8988)

src/lang/it.rs

@@ -632,9 +632,9 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("About RustDesk", "Info su RustDesk"),
         ("Send clipboard keystrokes", "Invia sequenze tasti appunti"),
         ("network_error_tip", "Controlla la connessione di rete, quindi seleziona 'Riprova'."),
-        ("Unlock with PIN", ""),
-        ("Requires at least {} characters", ""),
-        ("Wrong PIN", ""),
-        ("Set PIN", ""),
+        ("Unlock with PIN", "Sblocca con PIN"),
+        ("Requires at least {} characters", "Richiede almeno {} caratteri"),
+        ("Wrong PIN", "PIN errato"),
+        ("Set PIN", "Imposta PIN"),
     ].iter().cloned().collect();
 }