Support React 18

[KuSh]

I've updated my homepage project and noticed this message:

npm ERR! Found: [email protected]
npm ERR! node_modules/react
npm ERR!   react@"18.2.0" from the root project
npm ERR!   peer react@"^16.9.0 || ^17.0.0 || ^18.0.0" from [email protected]
npm ERR!   node_modules/gatsby
npm ERR!     gatsby@"4.17.2" from the root project
npm ERR!     peer gatsby@"^4.0.0-next" from [email protected]
npm ERR!     node_modules/gatsby-plugin-hubspot
npm ERR!       gatsby-plugin-hubspot@"2.0.0" from the root project
npm ERR!   1 more (react-dom)
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer react@"^16.9.0 || ^17.0.0" from [email protected]
npm ERR! node_modules/gatsby-plugin-hubspot
npm ERR!   gatsby-plugin-hubspot@"2.0.0" from the root project

Please add support for React 18