Update NuGet Packages - Minor Updates (#275)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Markdown.ColorCode/Markdown.ColorCode.csproj

@@ -48,7 +48,7 @@
   <ItemGroup>
     <PackageReference Include="ColorCode.Core" Version="2.0.15" />
     <PackageReference Include="ColorCode.HTML" Version="2.0.15" />
-    <PackageReference Include="Markdig" Version="1.4.0" />
+    <PackageReference Include="Markdig" Version="1.4.1" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

tests/Markdown.ColorCode.UnitTests/Markdown.ColorCode.UnitTests.csproj

@@ -22,15 +22,15 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="HtmlAgilityPack" Version="1.13.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
+    <PackageReference Include="HtmlAgilityPack" Version="1.13.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.11.0" />
     <PackageReference Include="NSubstitute" Version="6.2.0" />
     <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.17">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="NUnit" Version="4.6.1" />
-    <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>