Update RELEASE_NOTES.md for 1.5.38.1 release (#522)

Author: Arkatufus

RELEASE_NOTES.md

@@ -1,5 +1,3 @@
-#### 1.5.38 Feb 18 2025 ####
+#### 1.5.38.1 March 11th 2025 ####
 
-* [Bump Akka to 1.5.38](https://github.com/akkadotnet/akka.net/releases/tag/1.5.38)
-* [Bump Akka.Hosting to v1.5.38](https://github.com/akkadotnet/Akka.Hosting/releases/tag/1.5.38)
-* [Resolved: Memory Leak after updating Akka from 1.5.27.1 to 1.5.37](https://github.com/akkadotnet/Akka.Persistence.Sql/issues/516)
+* [Fix `BaseByteArrayJournalDao` stream resiliency problem](https://github.com/akkadotnet/Akka.Persistence.Sql/issues/521)