docs: add release-notes

Author: ziggie1984

docs/release-notes/release-notes-0.19.0.md

@@ -63,6 +63,9 @@
 * [Fixed a bug](https://github.com/lightningnetwork/lnd/pull/9322) that caused
     estimateroutefee to ignore the default payment timeout.
 
+* [Make deletion of alias edge atomic](
+  https://github.com/lightningnetwork/lnd/pull/8777).
+
 # New Features
 
 * [Support](https://github.com/lightningnetwork/lnd/pull/8390) for