Bump Markdig from 0.45.0 to 1.3.2

---
updated-dependencies:
- dependency-name: Markdig
  dependency-version: 1.3.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -6,7 +6,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="coverlet.collector" Version="6.0.4" />
-    <PackageVersion Include="Markdig" Version="0.45.0" />
+    <PackageVersion Include="Markdig" Version="1.3.2" />
     <PackageVersion Include="Microsoft.Extensions.Logging.Console" Version="10.0.9" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.6.0" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />