chore: changelog

Author: hstove

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to the versioning scheme outlined in the [README.md](RE
 - Logging improvements:
   - P2P logs now includes a reason for dropping a peer or neighbor
   - Improvements to how a PeerAddress is logged (human readable format vs hex)
+- Pending event dispatcher requests will no longer be sent to URLs that are no longer registered as event observers ([#5834](https://github.com/stacks-network/stacks-core/pull/5834))
 
 ### Fixed