Fix cargo clippy issue

src/data/session_identity.rs

@@ -30,7 +30,7 @@ pub struct SessionIdentityData {
 
 pub struct SessionIdentity<'a>(pub Option<&'a Identity>);
 
-impl<'a> SessionIdentity<'a> {
+impl SessionIdentity<'_> {
     fn get_session_data(&self) -> Option<SessionIdentityData> {
         if let Some(id) = self.0 {
             Self::deserialize_session_data(id.id().ok())