Update to zbus 5.x

https://github.com/dbus2/zbus/releases/tag/zbus-5.0.0

Now requires `pub` on uses of `#[proxy]` if the generated types should
be `pub`.

accounts-zbus/src/accounts.rs

@@ -30,7 +30,7 @@ use crate::{UserProxy, UserProxyBlocking};
 	default_service = "org.freedesktop.Accounts",
 	default_path = "/org/freedesktop/Accounts"
 )]
-trait Accounts {
+pub trait Accounts {
 	/// CacheUser method
 	fn cache_user(&self, name: &str) -> zbus::Result<zbus::zvariant::OwnedObjectPath>;
 

accounts-zbus/src/user.rs

@@ -28,7 +28,7 @@ use zbus::proxy;
 	default_service = "org.freedesktop.Accounts",
 	// default_path = "/org/freedesktop/Accounts/User1000"
 )]
-trait User {
+pub trait User {
 	/// GetPasswordExpirationPolicy method
 	fn get_password_expiration_policy(&self) -> zbus::Result<(i64, i64, i64, i64, i64, i64)>;