Update dependencies

Author: Numpsy

src/Serilog.Sinks.Debug/Serilog.Sinks.Debug.csproj

@@ -32,7 +32,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Serilog" Version="2.10.0" />
+    <PackageReference Include="Serilog" Version="4.0.0" />
   </ItemGroup>
 
   <ItemGroup>

test/Serilog.Sinks.Debug.Tests/Serilog.Sinks.Debug.Tests.csproj

@@ -5,17 +5,20 @@
     <AssemblyOriginatorKeyFile>../../assets/Serilog.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\Serilog.Sinks.Debug\Serilog.Sinks.Debug.csproj" />
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
-    <PackageReference Include="xunit" Version="2.2.0" />
-    <PackageReference Include="System.ValueTuple" Version="4.3.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="xunit" Version="2.8.1" />
   </ItemGroup>
 
   <ItemGroup>