Prepare EventHub ext for release (#1661)

Author: liliankasem

extensions/Worker.Extensions.EventHubs/release_notes.md

@@ -4,6 +4,6 @@
 - My change description (#PR/#issue)
 -->
 
-### Microsoft.Azure.Functions.Worker.Extensions.EventHubs 5.4.0-preview1
+### Microsoft.Azure.Functions.Worker.Extensions.EventHubs <version>
 
-- Add support for binding to `EventData`(#1609)
+- <entry>

extensions/Worker.Extensions.EventHubs/src/Worker.Extensions.EventHubs.csproj

@@ -6,7 +6,7 @@
     <Description>Azure Event Hubs extensions for .NET isolated functions</Description>
 
     <!--Version information-->
-    <VersionPrefix>5.4.0</VersionPrefix>
+    <VersionPrefix>5.4.1</VersionPrefix>
     <VersionSuffix>-preview1</VersionSuffix>
 
   </PropertyGroup>