changelog update

Author: crocodile-dentist

ouroboros-network/CHANGELOG.md

@@ -39,6 +39,9 @@
 - Renamed `Applications` to `DiffusionApplications`
 - `runM` function now receives `ExtraParameters` as an argument
 - Configurable Mux Egress Poll Interval
+- Added `pchPromotedHotVar` to `PeerConnectionHandle` to track when a peer has been promoted to hot
+- Added tag `PeerHotDuration` to `PeerSelectionActionsTrace` to indicate how long a remote
+  peer has been in hot mode until it was either demoted or closed.
 
 ## 0.21.2.0 -- 2025-06-02