Bump Markdig from 0.33.0 to 0.37.0

Bumps [Markdig](https://github.com/xoofx/markdig) from 0.33.0 to 0.37.0.
- [Release notes](https://github.com/xoofx/markdig/releases)
- [Changelog](https://github.com/xoofx/markdig/blob/master/changelog.md)
- [Commits](xoofx/markdig@0.33.0...0.37.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Directory.Packages.props

@@ -36,7 +36,7 @@
     <PackageVersion Include="Flurl" Version="3.0.7" />
     <PackageVersion Include="Flurl.Http" Version="3.2.4" />
     <PackageVersion Include="GoogleReCaptcha.V3" Version="1.3.1" />
-    <PackageVersion Include="Markdig" Version="0.33.0" />
+    <PackageVersion Include="Markdig" Version="0.37.0" />
     <PackageVersion Include="MediaInfo.Wrapper.Core" Version="21.9.3" />
     <PackageVersion Include="MediatR" Version="12.1.1" />
     <PackageVersion Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.21.0" />