Assembly Definitions compiler errors in Unity 2019.3.x

[Mathijs-Bakker]

Describe the bug
Duplicate references in test suite assembly definitions

To Reproduce
Steps to reproduce the behavior:
Fire up project in Unity 2019.3.0

Expected behavior
No errors
Extenject and Unity info (please complete the following information):

• Zenject version: master branch
• Unity version: 2019.3
• Project's scripting backend [e.g. Mono/IL2CPP]

Additional context
Some settings in the assembly definitions have been deprecated in Unity2019.3
They have no backward compatibility with older versions of Unity.