Bump next from 9.3.5 to 9.4.1

Bumps [next](https://github.com/zeit/next.js) from 9.3.5 to 9.4.1.
- [Release notes](https://github.com/zeit/next.js/releases)
- [Commits](https://github.com/zeit/next.js/compare/v9.3.5...v9.4.1)

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

package.json

@@ -63,7 +63,7 @@
     "eslint-plugin-react": "^7.20.0",
     "identity-obj-proxy": "^3.0.0",
     "jest": "^26.0.1",
-    "next": "^9.3.5",
+    "next": "^9.4.1",
     "prettier": "^2.0.5",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",