Bump Markdig from 0.33.0 to 0.34.0

Bumps [Markdig](https://github.com/xoofx/markdig) from 0.33.0 to 0.34.0.
- [Release notes](https://github.com/xoofx/markdig/releases)
- [Changelog](https://github.com/xoofx/markdig/blob/master/changelog.md)
- [Commits](xoofx/markdig@0.33.0...0.34.0)

---
updated-dependencies:
- dependency-name: Markdig
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Modules/Markdown/GenHTTP.Modules.Markdown.csproj

@@ -50,7 +50,7 @@
     <ProjectReference Include="..\Basics\GenHTTP.Modules.Basics.csproj" />
     <ProjectReference Include="..\IO\GenHTTP.Modules.IO.csproj" />
 
-    <PackageReference Include="Markdig" Version="0.33.0" />
+    <PackageReference Include="Markdig" Version="0.34.0" />
 
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />