Update SDK requirement to match that of the `js` package
Update SDK requirement to match that of the `js` package

evanweible-wf/react-dart,cleandart/react-dart,evanweible-wf/react-dart,cleandart/react-dart,cleandart/react-dart,evanweible-wf/react-dart,evanweible-wf/react-dart,cleandart/react-dart