docs: add note about migration in #11098 to Changelog (#11256)
docs: add note about migration in #11098 to Changelog (#11256)

* Add note about #11098

* Update UPDATING.md

Better description

Co-authored-by: Jesse Yang <c0c0aa80fee6c162c8f2f6a09e3448d68f2ff84c@airbnb.com>

Co-authored-by: Jesse Yang <c0c0aa80fee6c162c8f2f6a09e3448d68f2ff84c@airbnb.com>
apache/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,mistercrunch/panoramix,airbnb/caravel,airbnb/caravel,zhouyao1994/incubator-superset,zhouyao1994/incubator-superset,apache/incubator-superset,zhouyao1994/incubator-superset,mistercrunch/panoramix,airbnb/caravel,airbnb/caravel,zhouyao1994/incubator-superset,apache/incubator-superset,apache/incubator-superset,zhouyao1994/incubator-superset,mistercrunch/panoramix