4.1.0

@julienasp

What's New 📣

Update shipped API per v4.0 by @atifaziz in #1034
Update test packages to latest versions by @atifaziz in #1035
Set package validation baseline to version 4.0 by @atifaziz in #1042
Use .NET 8 SDK to add .NET 8 target by @atifaziz in #1041
Update to using C# 12 by @atifaziz in #1046
Address Subsets to-do about clearer members names by @atifaziz in #1048
Refactor RandomSubset internals for DRY, removing closure by @viceroypenguin in #1049
Set simple field naming rules with this qualifier by @atifaziz in #1050
Introduce Duplicates extension by @julienasp in #1037
Hide ToDictionary() in net8+ by @viceroypenguin in #1040
Use EqualityComparer<T>.Create from .NET 8 by @atifaziz in #1051
Refactor Subsets core into an iterator method by @atifaziz in #1052
Update shipped API for v4.1 by @atifaziz in #1053
Refactor Permutations into an iterator method by @atifaziz in #1054