Update Apache.NMS to latest official package

Apache.NMS project released official .net standard package.

Author: michaelpearce-gain

src/Spring/Spring.Messaging.Nms/Spring.Messaging.Nms.csproj

@@ -9,7 +9,7 @@
     <ProjectReference Include="..\Spring.Data\Spring.Data.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Apache.NMS" Version="1.7.1" />
+    <PackageReference Include="Apache.NMS" Version="1.8.0" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\GenCommonAssemblyInfo.cs">
@@ -20,4 +20,4 @@
     </EmbeddedResource>
     <EmbeddedResource Include="Messaging\Nms\Config\spring-nms-1.3.xsd" />
   </ItemGroup>
-</Project>
+</Project>