Android app crash caused by using Remote Config with other SDK and EDM4U resolution conflict

### [REQUIRED] Please fill in the following fields:

* Unity editor version: 2019.4.12f1_____
* Firebase Unity SDK version: 6.16.1_____
* Source you installed the SDK: Unity Package Manager_____ (.unitypackage or Unity Package Manager)
* Problematic Firebase Component: remoteConfig_____ (Auth, Database, etc.)
* Other Firebase Components in use: could messaging, crashlytics, dynamic links. remote config, analytics_____ (Auth, Database, etc.)
* Additional SDKs you are using: Facebook, IronSource (with a lot of adnetwork adapters[admob...]), EDMU 1.1.161, google play games_____ (Facebook, AdMob, etc.)
* Platform you are using the Unity editor on: Mac _____ (Mac, Windows, or Linux)
* Platform you are targeting:Android _____ (iOS, Android, and/or desktop)
* Scripting Runtime: IL2CPP _____ (Mono, and/or IL2CPP)

### [REQUIRED] Please describe the issue here:

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)
I'm getting an exception:
`E/firebase: Unable to find Method com/google/firebase/remoteconfig/FirebaseRemoteConfig.activateFetched (signature '()Z', instance). Please verify the AAR which contains the com/google/firebase/remoteconfig/FirebaseRemoteConfig class is included in your app.
`
things seemed to be working with firebase version 6.16.1 before today but today things stopped working and I think it's related to new firebase arr files that are being used:

new files:
```
Assets/Plugins/Android/com.google.firebase.firebase-abt-20.0.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-analytics-18.0.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-auth-20.0.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-config-20.0.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-iid-21.0.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-messaging-21.0.0.aar

```
old files:
```
Assets/Plugins/Android/com.google.firebase.firebase-abt-19.1.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-analytics-17.6.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-auth-19.4.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-config-19.2.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-iid-20.3.0.aar
Assets/Plugins/Android/com.google.firebase.firebase-messaging-20.3.0.aar
```

This seems similar to the issue with crashlytics: https://github.com/firebase/quickstart-unity/issues/758
Why does it use a higher version of the arr file than the one that is supported by the unity sdk?