deps: Update dependency Markdig to version 0.32.0

Updates-dependency: Markdig
Updates-dependency-from-version: 0.30.4
Updates-dependency-to-version: 0.32.0

Author: renovate[bot]

src/MarkdownGenerator.Test.DocsVerification/Grynwald.MarkdownGenerator.Test.DocsVerification.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Grynwald.Utilities" Version="1.6.122" />
-    <PackageReference Include="Markdig" Version="0.30.4" />
+    <PackageReference Include="Markdig" Version="0.32.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.5.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
     <PackageReference Include="xunit" Version="2.4.2" />