Migrate architecture components to AndroidX

[SUPERCILEX]

This entire block needs to be moved over to androidx versions. (I think we should just have it be part of the Androidx block and get rid of Arch to unify everything.)

FirebaseUI-Android/buildSrc/src/main/kotlin/Config.kt

Lines 40 to 51 in d953be7

	object Arch {
	private const val version = "1.1.1"
	const val runtime = "android.arch.lifecycle:runtime:$version"
	const val viewModel = "android.arch.lifecycle:viewmodel:$version"
	const val extensions = "android.arch.lifecycle:extensions:$version"
	const val compiler = "android.arch.lifecycle:compiler:$version"
	const val paging = "android.arch.paging:runtime:1.0.1"
	const val coreTesting = "android.arch.core:core-testing:1.1.1"
	}

[samtstern]

D'oh. I honestly forgot that there was Arch before there was AndroidX.

[samtstern]

Fixed and released in version 6.0.2