rtic-sync: add explicitly elided lifetimes to Signal::split

rtic-sync/CHANGELOG.md

@@ -7,6 +7,10 @@ For each category, _Added_, _Changed_, _Fixed_ add new entries at the top!
 
 ## [Unreleased]
 
+### Changed
+
+- Un-hide lifetimes of output type in `Signal::split` to resolve a new warning.
+
 ## v1.4.0 - 2025-06-22
 
 ### Added

rtic-sync/src/signal.rs

@@ -48,7 +48,7 @@ impl<T: Copy> Signal<T> {
     }
 
     /// Split the signal into a writer and reader.
-    pub fn split(&self) -> (SignalWriter<T>, SignalReader<T>) {
+    pub fn split(&self) -> (SignalWriter<'_, T>, SignalReader<'_, T>) {
         (SignalWriter { parent: self }, SignalReader { parent: self })
     }
 }