chore: update react 18 (#520)

* chore: update to react 18 and related dependencies

src/admin/components/elements/Button/types.ts

@@ -1,4 +1,4 @@
-import { MouseEvent } from 'react';
+import React, { MouseEvent } from 'react';
 
 export type Props = {
   className?: string,

src/admin/components/elements/Pill/types.ts

@@ -1,4 +1,5 @@
 export type Props = {
+  children?: React.ReactNode,
   className?: string,
   to?: string,
   icon?: React.ReactNode,

src/admin/components/elements/StepNav/index.tsx

@@ -9,7 +9,7 @@ import './index.scss';
 
 const Context = createContext({} as ContextType);
 
-const StepNavProvider: React.FC = ({ children }) => {
+const StepNavProvider: React.FC<{children?: React.ReactNode}> = ({ children }) => {
   const [stepNav, setStepNav] = useState([]);
 
   return (