Update Npgsql to 8.0.3

Author: philnach

Extensions/PostgreSQL/Cosmos.DataTransfer.PostgresqlExtension.csproj

@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="6.0.0" />
-    <PackageReference Include="Npgsql" Version="7.0.6" />
+    <PackageReference Include="Npgsql" Version="8.0.3" />
     <PackageReference Include="System.ComponentModel.Composition" Version="7.0.0" />
   </ItemGroup>