Update AngleSharp to 0.12.0.

Author: Denis Ivanov

src/AngleSharp.XPath.Tests/AngleSharp.XPath.Tests.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.6.0" />
-    <PackageReference Include="NUnit" Version="3.9.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.10.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.0.1" />
+    <PackageReference Include="NUnit" Version="3.11.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\AngleSharp.XPath\AngleSharp.XPath.csproj" />

src/AngleSharp.XPath/AngleSharp.XPath.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>1.1.2</Version>
+    <Version>1.1.3</Version>
     <Authors>Denis Ivanov</Authors>
     <PackageId>AngleSharp.XPath</PackageId>
-    <AssemblyVersion>1.1.2</AssemblyVersion>
+    <AssemblyVersion>1.1.3</AssemblyVersion>
     <AssemblyName>AngleSharp.XPath</AssemblyName>
     <RootNamespace>AngleSharp.XPath</RootNamespace>
     <TargetFramework>netstandard2.0</TargetFramework>
-    <FileVersion>1.1.2</FileVersion>
+    <FileVersion>1.1.3</FileVersion>
     <Description>XPath support for AngleSharp</Description>
     <PackageProjectUrl>https://github.com/AngleSharp/AngleSharp.XPath/</PackageProjectUrl>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
@@ -19,7 +19,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="AngleSharp" Version="0.11.0" />
+    <PackageReference Include="AngleSharp" Version="0.12.0" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">