feat(eslint-plugin-react-hooks): update engines declaration

[michaelfaith]

In preparation for the merging of the compiler plugin into this one (#32416), this change proactively updates the plugin's engines declaration to require Node versions greater than or equal to 18

BREAKING CHANGE

[react-sizebot]

Comparing: 56c7d10...207097a

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.js	=	6.68 kB	6.68 kB	=	1.83 kB	1.83 kB
oss-stable/react-dom/cjs/react-dom-client.production.js	=	518.24 kB	518.24 kB	=	92.43 kB	92.43 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.69 kB	6.69 kB	=	1.83 kB	1.83 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	570.57 kB	570.57 kB	=	101.56 kB	101.56 kB
facebook-www/ReactDOM-prod.classic.js	=	638.06 kB	638.06 kB	=	112.28 kB	112.28 kB
facebook-www/ReactDOM-prod.modern.js	=	628.38 kB	628.38 kB	=	110.70 kB	110.70 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 0adba61