SDK 3.43.0: Adds version bump and changelog (#4666)

* added project refrence

* update changelog and version bump

* contracts

* removed unreleated change

* Update changelog.md

Co-authored-by: Kiran Kumar Kolli <kirankk@microsoft.com>

* Update changelog.md

Co-authored-by: Kiran Kumar Kolli <kirankk@microsoft.com>

* update heding description

---------

Co-authored-by: Kiran Kumar Kolli <kirankk@microsoft.com>

Author: NaluTripician

Directory.Build.props

@@ -1,7 +1,7 @@
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 	<PropertyGroup>
-		<ClientOfficialVersion>3.42.0</ClientOfficialVersion>
-		<ClientPreviewVersion>3.43.0</ClientPreviewVersion>
+		<ClientOfficialVersion>3.43.0</ClientOfficialVersion>
+		<ClientPreviewVersion>3.44.0</ClientPreviewVersion>
 		<ClientPreviewSuffixVersion>preview.0</ClientPreviewSuffixVersion>
 		<DirectVersion>3.35.0</DirectVersion>
 		<EncryptionOfficialVersion>2.0.4</EncryptionOfficialVersion>