refactor: Add elided lifetime to result

See also:
- https://blog.rust-lang.org/2025/08/07/Rust-1.89.0/#mismatched-lifetime-syntaxes-lint

src/config.rs

@@ -226,12 +226,12 @@ impl Config {
     }
 
     /// Get the user configuration values.
-    pub fn values(&self) -> RwLockReadGuard<ConfigValues> {
+    pub fn values(&self) -> RwLockReadGuard<'_, ConfigValues> {
         self.values.read().unwrap()
     }
 
     /// Get the runtime user state values.
-    pub fn state(&self) -> RwLockReadGuard<UserState> {
+    pub fn state(&self) -> RwLockReadGuard<'_, UserState> {
         self.state.read().unwrap()
     }
 

src/events.rs

@@ -33,7 +33,7 @@ impl EventManager {
 
     /// Return a non-blocking iterator over the messages awaiting handling. Calling `next()` on the
     /// iterator never blocks.
-    pub fn msg_iter(&self) -> TryIter<Event> {
+    pub fn msg_iter(&self) -> TryIter<'_, Event> {
         self.rx.try_iter()
     }
 

src/mpris.rs

@@ -123,7 +123,7 @@ impl MprisPlayer {
     }
 
     #[zbus(property)]
-    fn metadata(&self) -> HashMap<String, Value> {
+    fn metadata(&self) -> HashMap<String, Value<'_>> {
         let mut hm = HashMap::new();
 
         let playable = self.queue.get_current();