ST. PAUL, Minn. — The workforce in Minnesota is growing, but slowly, as more young people move to other states compared to those settling in Minnesota, the state’s demographer said Wednesday. That sluggish increase in the number of people who have a job or are looking for one could stunt economic growth and create workforce shortages for employers. Contributing to that slowdown is an aging population and falling birth rates. Dr. Susan Brower, the demographer, told the Senate Jobs Committee those two factors mirror trends across the U.S. and other countries, but historically it hasn’t been the norm. “Without…..