Bump MudBlazor from 6.0.3 to 6.0.4 (#62)

Bumps [MudBlazor](https://github.com/MudBlazor/MudBlazor) from 6.0.3 to 6.0.4.
- [Release notes](https://github.com/MudBlazor/MudBlazor/releases)
- [Changelog](https://github.com/MudBlazor/MudBlazor/blob/dev/CHANGELOG.md)
- [Commits](MudBlazor/MudBlazor@v6.0.3...v6.0.4)

---
updated-dependencies:
- dependency-name: MudBlazor
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/MudBlazor.Markdown/MudBlazor.Markdown.csproj

@@ -19,7 +19,7 @@
 
 	<ItemGroup>
 		<PackageReference Include="Markdig" Version="0.26.0" />
-		<PackageReference Include="MudBlazor" Version="6.0.3" />
+		<PackageReference Include="MudBlazor" Version="6.0.4" />
 	</ItemGroup>
 
 	<ItemGroup>