Set minSdkVersion to "28" instead of "android-28"
Set minSdkVersion to "28" instead of "android-28"

We used the wrong constant when setting this project up.

Test: ./gradlew buildOnServer
Change-Id: Ia9a77c3ae5d3cec4ac95e75a30c8c08ba26e98e2

androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx