update changelog

Author: wisp3rwind

esp-hal/CHANGELOG.md

@@ -27,6 +27,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `AtomicWaker::wake` is now placed in IRAM (#4627)
 - Internal clock configuration rework (#4501)
 - RMT: Support for `Into<PulseCode>` and `From<PulseCode>` has been removed from Tx and Rx methods, respectively, in favor of requiring `PulseCode` directly. (#4616)
+- RMT: Tx handling has been revised: Some errors will now be returned by `TxTransaction::wait()` instead of `Channel::transmit`. `Channel::transmit_continuously()` can now also report `Error::EndMarkerMissing`. (#4617)
 
 ### Fixed