Update Scriban.Signed to support more functions, e.g math.random

[dmytro-pryvedeniuk]

Is your feature request related to a problem? Please describe.
I need to generate a random value in the response. The Scriban function {{math.random 1 1000}} results in the error "The function math.random was not found". WireMock.Net 1.5.2 uses Scriban.Signed 3.3.2, but referencing Scriban.Signed 5.5.0 helps to resolve it.

Describe the solution you'd like
I would like WireMock.Net (and the corresponding docker image) to use the latest version of Scriban.Signed, so an extra reference of Scriban.Signed is not needed.

Describe alternatives you've considered
Reference Scriban.Signed separately, build own docker image.

Is your feature request supported by WireMock (java version)? Please provide details.
No idea :)

Additional context

[StefH]

#777

[StefH]

@dmytro-pryvedeniuk
A new NuGet + docker will be released soon.