Bump openapi-dotnet monorepo to 1.6.28#503

costellobot[bot] merged 1 commit intomainmartincostello/aspnetcore-openapi:mainfrom

renovate/nuget/openapi-dotnet-monorepomartincostello/aspnetcore-openapi:renovate/nuget/openapi-dotnet-monorepoCopy head branch name to clipboard