Bump Microsoft.AspNetCore.OpenApi

Bumps the aspnetcore group with 1 update in the / directory: [Microsoft.AspNetCore.OpenApi](https://github.com/dotnet/aspnetcore).


Updates `Microsoft.AspNetCore.OpenApi` from 8.0.4 to 8.0.6
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](dotnet/aspnetcore@v8.0.4...v8.0.6)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.OpenApi
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: aspnetcore
...

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

samples/Backgrounder.Sample.ServiceBus.Web/Backgrounder.Sample.ServiceBus.Web.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.4" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.6" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
   </ItemGroup>