Update Kotlin version to 1.3.7 and coroutines version to 1.3.5

// Synchronized version numbers for dependencies used by (some) modules

object Versions {

    const val kotlin = "1.3.61"

    const val coroutines = "1.3.3"

    const val kotlin = "1.3.70"

    const val coroutines = "1.3.5"

    const val junit = "4.12"

    const val robolectric = "4.1"