It was a nail-biter in Edina, where baristas at the Starbucks in the 50th and France retail district voted 9-6 on Tuesday to unionize with Starbucks Workers United. The narrow victory makes the shop the latest Minnesota store to join the national organizing drive, extending a yearslong campaign that started in the Twin Cities in 2022 and has since spread to suburbs and outstate communities. According to the Minneapolis / St. Paul Business Journa…