Bump nunit from 3.13.3 to 4.0.1

Bumps [nunit](https://github.com/nunit/nunit) from 3.13.3 to 4.0.1.
- [Release notes](https://github.com/nunit/nunit/releases)
- [Changelog](https://github.com/nunit/nunit/blob/master/CHANGES.md)
- [Commits](nunit/nunit@v3.13.3...v4.0.1)

---
updated-dependencies:
- dependency-name: nunit
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

tests/Webserver.API.UnitTests/Webserver.Api.UnitTests.csproj

@@ -1,40 +1,40 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-	<PropertyGroup Label="Globals">
-		<Platforms>x64;AnyCPU;x86</Platforms>
-	</PropertyGroup>
-
-	<PropertyGroup>
-		<TargetFrameworks>net48;net6.0;net7.0;net8.0</TargetFrameworks>
-		<IsPackable>false</IsPackable>
-		<AssemblyName>Webserver.API.UnitTests</AssemblyName>
-		<RootNamespace>Webserver.API.UnitTests</RootNamespace>
-	</PropertyGroup>
-
-	<ItemGroup>
-		<PackageReference Include="coverlet.collector" Version="6.0.0">
-			<PrivateAssets>all</PrivateAssets>
-			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
-		</PackageReference>
-		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1">
-			<PrivateAssets>all</PrivateAssets>
-			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
-		</PackageReference>
-		<PackageReference Include="MimeMapping" Version="1.0.1.37" />
-		<PackageReference Include="nunit" Version="3.13.3" />
-		<PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-		<PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
-	</ItemGroup>
-
-
-	<ItemGroup>
-		<ProjectReference Include="..\..\src\Webserver.API\Webserver.API.csproj" />
-	</ItemGroup>
-
-
-	<ItemGroup>
-		<PackageReference Update="Nerdbank.GitVersioning" Version="3.6.133" />
-	</ItemGroup>
-
+<Project Sdk="Microsoft.NET.Sdk">
+
+	<PropertyGroup Label="Globals">
+		<Platforms>x64;AnyCPU;x86</Platforms>
+	</PropertyGroup>
+
+	<PropertyGroup>
+		<TargetFrameworks>net48;net6.0;net7.0;net8.0</TargetFrameworks>
+		<IsPackable>false</IsPackable>
+		<AssemblyName>Webserver.API.UnitTests</AssemblyName>
+		<RootNamespace>Webserver.API.UnitTests</RootNamespace>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="coverlet.collector" Version="6.0.0">
+			<PrivateAssets>all</PrivateAssets>
+			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+		</PackageReference>
+		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1">
+			<PrivateAssets>all</PrivateAssets>
+			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+		</PackageReference>
+		<PackageReference Include="MimeMapping" Version="1.0.1.37" />
+		<PackageReference Include="nunit" Version="4.0.1" />
+		<PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+		<PackageReference Include="RichardSzalay.MockHttp" Version="6.0.0" />
+	</ItemGroup>
+
+
+	<ItemGroup>
+		<ProjectReference Include="..\..\src\Webserver.API\Webserver.API.csproj" />
+	</ItemGroup>
+
+
+	<ItemGroup>
+		<PackageReference Update="Nerdbank.GitVersioning" Version="3.6.133" />
+	</ItemGroup>
+
 </Project>