chore(deps): update dependency markdig to 1.1.1

Author: renovate[bot]

test/Serilog.Sinks.HttpTests/Serilog.Sinks.HttpTests.csproj

@@ -16,7 +16,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Markdig" Version="1.1.0" />
+    <PackageReference Include="Markdig" Version="1.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />