fix: don't close cursor before closing connection (#12821)
fix: don't close cursor before closing connection (#12821)


zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,mistercrunch/panoramix,mistercrunch/panoramix,zhouyao1994/incubator-superset,mistercrunch/panoramix,apache/incubator-superset,zhouyao1994/incubator-superset,airbnb/caravel,apache/incubator-superset,airbnb/caravel,apache/incubator-superset,airbnb/caravel,apache/incubator-superset,airbnb/caravel,zhouyao1994/incubator-superset