Update MQTTnet.nuspec

Build/MQTTnet.nuspec

@@ -13,7 +13,10 @@
     <description>MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker) and supports v3.1.0, v3.1.1 and v5.0.0 of the MQTT protocol.</description>
     <releaseNotes>
 * [Core] Removed IDisposable from MqttClientConnection.cs (#1284).
-* [Server] Improved session management for MQTT v5 (#1294, thanks to @logicaloud).
+* [Core] Improved message of timeout exception (#1302, thanks to @patagonaa).
+* [RpcClient] Filling response topic when using MQTTv5. (#1295, thanks to @MD-V).
+* [Server] Fixed 'SessionIsPresent' handling for MQTTv5 (#1300, thanks to @logicaloud).
+* [Server] Improved session management for MQTTv5 (#1294, thanks to @logicaloud).
 Git commit: $gitCommit
     </releaseNotes>
     <copyright>Copyright Christian Kratky 2016-2021</copyright>