- Fix tests project

Author: NinjaRocks

README.md

@@ -1,9 +1,8 @@
 # FileUtil  
 [![NuGet version](https://badge.fury.io/nu/FileUtil.Core.svg)](https://badge.fury.io/nu/FileUtil.Core) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://github.com/NinjaRocks/FileUtil.Core/blob/master/License.md) [![CI](https://github.com/NinjaRocks/FileUtil.Core/actions/workflows/CI-Build.yml/badge.svg)](https://github.com/NinjaRocks/FileUtil.Core/actions/workflows/CI-Build.yml) [![GitHub Release](https://img.shields.io/github/v/release/ninjarocks/FileUtil.Core?logo=github&sort=semver)](https://github.com/ninjarocks/FileUtil.Core/releases/latest)
 [![CodeQL](https://github.com/NinjaRocks/FileUtil.Core/actions/workflows/codeql.yml/badge.svg)](https://github.com/NinjaRocks/FileUtil.Core/actions/workflows/codeql.yml) [![.Net Stardard](https://img.shields.io/badge/.Net%20Standard-2.1-blue)](https://dotnet.microsoft.com/en-us/download/dotnet/2.1)
-
-.Net Library to read from fixed width or delimiter separated file using strongly typed objects.
 -------------
+.Net Library to read from fixed width or delimiter separated file using strongly typed objects.
 
 
 **Fixed Width or Delimiter Separated File** 

test/Ninja.FileUtil.Tests/Ninja.FileUtil.Tests.csproj

@@ -1,15 +1,20 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Moq" Version="4.13.0" />
-    <PackageReference Include="nunit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.8.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="Moq" Version="4.18.3" />
+    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+    <PackageReference Include="NUnit.Analyzers" Version="3.3.0" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
   </ItemGroup>
 
   <ItemGroup>