Update RELEASE_NOTES.md for 1.5.3 release (#199)

Arkatufus · web-flow · commit b8353e39e502 · 2023-04-21T16:06:40.000-05:00
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
@@ -1,3 +1,8 @@
+### 1.5.3 April 21 2023 ###
+
+* [Update Akka.NET to v1.5.3](https://github.com/akkadotnet/akka.net/releases/tag/1.5.3)
+* [Implement per query isolation level setting from Akka.NET 1.5.3](https://github.com/akkadotnet/Akka.Persistence.PostgreSql/pull/198)
+
 ### 1.5.2 April 6 2023 ###
 
 * [Update Akka.NET to v1.5.2](https://github.com/akkadotnet/akka.net/releases/tag/1.5.2)
