Bump Microsoft.Azure.Amqp to 2.4.2 (#676)

Author: SeanFeldman

src/Microsoft.Azure.ServiceBus/Microsoft.Azure.ServiceBus.csproj

@@ -27,7 +27,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Azure.Amqp" Version="[2.4.1, 3.0.0)" />
+    <PackageReference Include="Microsoft.Azure.Amqp" Version="[2.4.2, 3.0.0)" />
     <PackageReference Include="Microsoft.Azure.Services.AppAuthentication" Version="[1.0.1, 2.0.0)" />
     <PackageReference Include="Microsoft.IdentityModel.Clients.ActiveDirectory" Version="[3.17.2, 5.0.0)" />
     <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="4.5.1" />