[docs] Upgrade react-docgen (#6635)
[docs] Upgrade react-docgen (#6635)

Fixes #6612
hwo411/material-ui,igorbt/material-ui,ichiohta/material-ui,mit-cml/iot-website-source,kittyjumbalaya/material-components-web,janmarsicek/material-ui,kittyjumbalaya/material-components-web,hai-cea/material-ui,manchesergit/material-ui,janmarsicek/material-ui,ichiohta/material-ui,janmarsicek/material-ui,hai-cea/material-ui,manchesergit/material-ui,mit-cml/iot-website-source,janmarsicek/material-ui,hwo411/material-ui,igorbt/material-ui,mit-cml/iot-website-source