Country music star Colt Ford was in critical condition Friday after suffering a heart attack following his concert in Gilbert, Arizona, the previous night. Ford, 53, was at the Mayo Clinic in Scottsdale in stable but critical condition, a spokesperson for the performer told KPNX-TV. Ford was moved to the Mayo Clinic after being in the intensive care unit at Banner Desert Medical Center in Mesa on Thursday night after his concert at Dierks Bently’s Whiskey Row in Gilbert. JUST IN: Country music singer Colt Ford reportedly suffers a heart attack after his performance at Dierks Bentley’s ‘Whiskey…