Upgrade packages

[MatthiasHuygelen]

This pr was created due to the issue ligershark/WebOptimizer#373

[madskristensen]

Thanks

[emayevski]

@madskristensen Could you please make an update of the nuget packages?

[MatthiasHuygelen]

@madskristensen publish failed
Error publishing package. NuGet server returned 403: The specified API key is invalid, has expired, or does not have permission to access the specified package.

[emayevski]

@madskristensen publish failed Error publishing package. NuGet server returned 403: The specified API key is invalid, has expired, or does not have permission to access the specified package.

That's a pity. I assume nobody knows who has the right key or the way to update / replace it?

[madskristensen]

@emayevski I just updated the key and started the release build

[emayevski]

@madskristensen Wonderful, thank you!