test: update required tests to python 3.8 (#16973)
test: update required tests to python 3.8 (#16973)


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