Update Npgsql to 10.0.1 for net8.0 target and add TestConnectionManager

Co-authored-by: droyad <1687639+droyad@users.noreply.github.com>

Author: Copilot

src/Tests/TestConnectionManager.cs

@@ -0,0 +1,21 @@
+using System.Collections.Generic;
+using System.Data;
+using DbUp.Engine.Transactions;
+
+namespace DbUp.Postgresql.Tests;
+
+/// <summary>
+/// Test implementation of DatabaseConnectionManager for unit testing.
+/// </summary>
+public class TestConnectionManager : DatabaseConnectionManager
+{
+    public TestConnectionManager(IDbConnection connection) 
+        : base(new DelegateConnectionFactory(_ => connection))
+    {
+    }
+
+    public override IEnumerable<string> SplitScriptIntoCommands(string scriptContents)
+    {
+        yield return scriptContents;
+    }
+}

src/Tests/Tests.csproj

@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\dbup-postgresql\dbup-postgresql.csproj"/>
-    <PackageReference Include="DbUp.Tests.Common" Version="6.0.15" />
+    <PackageReference Include="DbUp.Tests.Common" Version="5.0.37" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">

src/dbup-postgresql/dbup-postgresql.csproj

@@ -32,7 +32,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net8.0'">
-    <PackageReference Include="Npgsql" Version="9.0.4" />
+    <PackageReference Include="Npgsql" Version="10.0.1" />
   </ItemGroup>
 
   <ItemGroup>