The Google Home Speaker is Google’s first smart speaker in years. And it’s pretty! | Photo: Jennifer Patison Tuohy / The Verge Smart speakers have spent the past few years searching for a compelling second act. Beyond music, timers, and controlling your lights, they've struggled to justify taking up space on the kitchen counter. AI promised to change that. Amazon debuted its new hardware powered by a revamped Alexa last fall, and now it's final…