Update release note to describe the SSL idle timer fix

Author: SeanTAllen

.release-notes/update-lori-to-0.12.0.md

@@ -1,3 +1,3 @@
-## Update lori to 0.12.0
+## Fix idle timer issues with WSS connections
 
-Updates the ponylang/lori dependency to 0.12.0. If you pin lori independently, update your `corral.json` to match.
+Updates the ponylang/lori dependency to 0.12.0, which fixes idle timer issues with SSL connections. WSS users with idle timeouts configured could have experienced premature timeout firing during the TLS handshake or a timer resource leak. If you pin lori independently, update your `corral.json` to match.