Update RELEASE_NOTES.md for 0.3.0 release (#110)

Author: Arkatufus

RELEASE_NOTES.md

@@ -1,3 +1,7 @@
+#### 0.3.0 December 18th 2024 ####
+
+* [Fix Akka.Analyzers not being able to be installed on old style .NET Framework .csproj projects](https://github.com/akkadotnet/akka.analyzers/pull/107)
+
 #### 0.3.0-beta1 December 3rd 2024 ####
 
 * [Fix Akka.Analyzers not being able to be installed on old style .NET Framework .csproj projects](https://github.com/akkadotnet/akka.analyzers/pull/107)