Bump Markdig from 0.40.0 to 1.3.0

---
updated-dependencies:
- dependency-name: Markdig
  dependency-version: 1.3.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Bloxstrap/Bloxstrap.csproj

@@ -74,7 +74,7 @@
     <PackageReference Include="AvalonEdit" Version="6.3.0.90" />
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageReference Include="DiscordRichPresence" Version="1.2.1.24" />
-    <PackageReference Include="Markdig" Version="0.40.0" />
+    <PackageReference Include="Markdig" Version="1.3.0" />
     <PackageReference Include="Microsoft.Diagnostics.Tracing.TraceEvent" Version="3.2.3" />
     <PackageReference Include="Microsoft.Windows.CsWin32" Version="0.3.275">
       <PrivateAssets>all</PrivateAssets>