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`.

upower/src/device.rs

@@ -68,7 +68,7 @@ pub enum BatteryLevel {
 	default_service = "org.freedesktop.UPower",
 	assume_defaults = false
 )]
-trait Device {
+pub trait Device {
 	#[zbus(property)]
 	fn battery_level(&self) -> zbus::Result<BatteryLevel>;
 

upower/src/kbdbacklight.rs

@@ -8,7 +8,7 @@ use zbus::proxy;
 	interface = "org.freedesktop.UPower.KbdBacklight",
 	default_path = "/org/freedesktop/UPower/KbdBacklight"
 )]
-trait KbdBacklight {
+pub trait KbdBacklight {
 	/// GetBrightness method
 	fn get_brightness(&self) -> zbus::Result<i32>;
 

upower/src/upower.rs

@@ -6,7 +6,7 @@ use zbus::proxy;
 use crate::device::{DeviceProxy, DeviceProxyBlocking};
 
 #[proxy(interface = "org.freedesktop.UPower", assume_defaults = true)]
-trait UPower {
+pub trait UPower {
 	/// EnumerateDevices method
 	fn enumerate_devices(&self) -> zbus::Result<Vec<zbus::zvariant::OwnedObjectPath>>;