Run CI tests against multiple Android versions #415
Description
Good first issue
This ticket has the Good first issue label! This means it's been especially curated by other CHT contributors to be easy to work on for first time contributors per the docs.
Overview
Describe the issue
CHT Android 1.0+ supports running on devices with Android 5.0+.
However, our GitHub Action CI jobs are only running tests against one Android version (currently Android 14 (level 34)).
Describe the improvement you'd like
It looks like reactivecircus/android-emulator-runner supports all the way back to Android 4 (level 14), so hopefully we can dial it in to test with Android 5 (level 21) and Android 16 (level 36).
Describe alternatives you've considered
We have discussed raising the minimum supported version of Android in a 2.x release of cht-android. I think that conversation will be influenced by whatever level of Android we are able to successfully get automated testing on. If we can run our tests on Android 5 and all our dependencies continue to support it, then there is not really any reason to bump our minimum supported version.
Details
Update the instrumentation-tests job in the GitHub CI workflow to use a matrix strategy that adjusts the reactivecircus/android-emulator-runner api-level property to 21 or 36.
We might have to iterate on the changes several times depending on how things run when the PR is opened, but hopefully we can find a configuration that works.