PR#143 Fix tests can't run on API 21

Seems like jacoco androidTestCoverage breaks tests on API 21 with Resource.NotFound for some reason.
It works well on newer API levels.
To workaround it, we simply disable that coverage for CI.

.github/workflows/pull-request-jobs.yml

@@ -122,7 +122,7 @@ jobs:
           force-avd-creation: false
           emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
           disable-animations: true
-          script: ./gradlew connectedDebugAndroidTest
+          script: ./gradlew connectedDebugAndroidTest -PdisableAndroidTestCoverage=true
       - name: Upload Test Results
         uses: actions/upload-artifact@v2
         if: always()