Update Pgsql test project

Author: mythz

src/ServiceStack.OrmLite.PostgreSQL.Tests/ServiceStack.OrmLite.PostgreSQL.Tests.csproj

@@ -25,7 +25,7 @@
 
   <ItemGroup>
     <PackageReference Include="NUnit" Version="3.6.1" />
-    <PackageReference Include="Npgsql" Version="3.2.4.1" />
+    <PackageReference Include="Npgsql" Version="3.2.5" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(TargetFramework)' == 'net45' ">