Bump react and @types/react in /nextjs

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) and [@types/react](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react). These dependencies needed to be updated together.

Updates `react` from 18.2.0 to 18.3.0
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/HEAD/packages/react)

Updates `@types/react` from 18.2.75 to 18.3.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react)

---
updated-dependencies:
- dependency-name: react
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: "@types/react"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

nextjs/package.json

@@ -15,7 +15,7 @@
     "plyr": "^3.7.8",
     "postcss": "^8.4.38",
     "qs": "^6.12.0",
-    "react": "^18.2.0",
+    "react": "^18.3.0",
     "react-dom": "^18.2.0",
     "react-markdown": "^9.0.1",
     "remark-unwrap-images": "^4.0.0",
@@ -24,7 +24,7 @@
   },
   "devDependencies": {
     "@types/node": "^20.12.7",
-    "@types/react": "^18.2.75",
+    "@types/react": "^18.3.0",
     "typescript": "^5.4.4"
   }
 }