Update NHibernate NuGet package

Author: peetw

NHibernate.Spatial/NHibernate.Spatial.csproj

@@ -14,7 +14,7 @@
 
   <ItemGroup>
     <PackageReference Include="NetTopologySuite" Version="2.0.0" />
-    <PackageReference Include="NHibernate" Version="5.2.6" />
+    <PackageReference Include="NHibernate" Version="5.2.7" />
   </ItemGroup>
 
 </Project>