Prepare ServiceBus extension for release (#1789)

Author: liliankasem

extensions/Worker.Extensions.ServiceBus/release_notes.md

@@ -4,8 +4,6 @@
 - My change description (#PR/#issue)
 -->
 
-### Microsoft.Azure.Functions.Worker.Extensions.ServiceBus 5.10.0-preview3
+### Microsoft.Azure.Functions.Worker.Extensions.ServiceBus 5.12.0
 
 - Support binding to ServiceBusReceivedMessage (#1313)
-- Make Constants class internal (#1609)
-- Return ConversionResult.Failed when the wrong content-type or binding source is used (#1609)

extensions/Worker.Extensions.ServiceBus/src/Worker.Extensions.ServiceBus.csproj

@@ -6,8 +6,7 @@
     <Description>Azure Service Bus extensions for .NET isolated functions</Description>
 
     <!--Version information-->
-    <VersionPrefix>5.11.0</VersionPrefix>
-    <VersionSuffix>-preview1</VersionSuffix>
+    <VersionPrefix>5.12.0</VersionPrefix>
 
     <!--Temporarily opting out of documentation. Pending documentation-->
     <GenerateDocumentationFile>false</GenerateDocumentationFile>