Update target frameworks and dependencies

[TonyTroeff]

Pull Request Description

This PR aims to update all target frameworks and dependencies.

• Different package versions will be required for different target frameworks (e.g. Microsoft.Extensions.DependencyInjection).
• Changed the access modifiers from public to internal for the DecoratedAttribute, DecoratedMethod, DecoratedType, XUnitFrameworkExtensions, SerializableCleanTestCaseData, SerializableDemand, SerializableIndividualDependencyNode, SerializableInitializationUtility, TestOutputHelperPlaceholder, CleanTestClassWrapper, and CleanTestReflectionTypeInfoWrapper classes.
• Removed the unused ConstructionCache. SerializableCleanTestAssemblyData, and CleanTestAssemblyWrapper classes
• Replaced Moq with NSubstitute everywhere.

Motivation and Context

It was about time to update the target frameworks and along with that, it is reasonable to upgrade the packages we depend in.

Checklist

• [x] I have tested these changes thoroughly.
• [ ] I have added/updated relevant documentation.
• [x] My code follows the project's coding guidelines.
• [x] I have performed a self-review of my changes.
• [ ] My changes are backwards compatible.

[sonarcloud[bot]]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
80.6% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud