[KSP - LMP] Need to update docker Image to Dotnet 6

[xenosmurfen]

Egg: KSP - LMP
File: ksp/LMP/egg-k-s-p--l-m-p.json

Issue Description:

Latest LMP uses Dotnet 6, the egg needs to be updated with ghcr.io/ptero-eggs/yolks:dotnet_6