clippy: Silence few false positives unused_assignments

Because those are used either for serialization or exposed as public
APIs.

Author: bilelmoussaoui

client/src/dbus/api/secret.rs

@@ -1,3 +1,4 @@
+#![expect(unused_assignments)]
 use std::sync::Arc;
 
 use serde::{Deserialize, Serialize, ser::SerializeTuple};

client/src/file/unlocked_item.rs

@@ -1,3 +1,4 @@
+#![expect(unused_assignments)]
 use std::{collections::HashMap, str::FromStr, time::Duration};
 
 use serde::{Deserialize, Serialize};

client/src/key.rs

@@ -1,3 +1,4 @@
+#![expect(unused_assignments)]
 use zeroize::{Zeroize, ZeroizeOnDrop};
 
 use crate::{crypto, file};

pam/src/protocol.rs

@@ -1,3 +1,4 @@
+#![expect(unused_assignments)]
 use serde::{Deserialize, Serialize};
 use serde_repr::{Deserialize_repr, Serialize_repr};
 use zeroize::{Zeroize, ZeroizeOnDrop};

server/src/pam_listener.rs

@@ -1,3 +1,4 @@
+#![expect(unused_assignments)]
 //! PAM integration - Unix socket listener for receiving secrets from PAM module
 
 use std::{os::unix::fs::PermissionsExt, path::PathBuf, sync::Arc};