Update dependencies of "Hangfire.AspNet" nuget package

[RudeySH]

I just ran into an issue where I was unknowingly using an old version of Hangfire.Core, because I was referencing Hangfire.AspNet, whose dependencies look like this:

[odinserj]

Please reference the required packages and its versions explicitly, Hangfire.AspNet supports every version since 1.6.0 and there's no need to bump every Hangfire-related package to a higher version with each Hangfire.Core release, since it's very impractical.

<PackageReference Include="Hangfire.Core" Version="X.Y.Z" />
<PackageReference Include="Hangfire.AspNet" Version="0.2.0" />