cognitive-services-speech-sdk: Missing .so error on Unity sample for Android

Describe the bug When attempting to deploy the Quickstart for Unity sample to Android, I get an “Unable to find libMicrosoft.CognitiveServices.Speech.core.so” error, despite the .so being contained in the built .apk

To Reproduce Steps to reproduce the behavior:

1. Add Unity package to project (builds to Android).
2. Include a class using Microsoft.CognitiveServices.Speech
3. Build and deploy to device
4. Press button trigger for Cognitive Services
5. Error will appear in logs and services do not run.

Unity   : Unable to find libMicrosoft.CognitiveServices.Speech.core.so
Unity   : Unable to find Microsoft.CognitiveServices.Speech.core.so

Expected behavior Cognitive services to initialize and then start a recognizer at a button press. This tutorial.

Version of the Cognitive Services Speech SDK 1.4.2

Platform, Operating System, and Programming Language

• OS: Android, using SDK 26
• Hardware - ARM (armeabi-v7a), Pixel 3XL
• Programming language: C# in Unity

Additional context I also receive this in the build logs: Assembly 'Microsoft.CognitiveServices.Speech.csharp' has non matching file name: 'Microsoft.CognitiveServices.Speech.csharp.unix.dll'. This can cause build issues on some platforms.

Only the .dll/.so files under the Android folder and the .csharp.unix.dll are configured for Android