Bump next from 7.0.2 to 9.3.2

Bumps [next](https://github.com/zeit/next.js) from 7.0.2 to 9.3.2.
- [Release notes](https://github.com/zeit/next.js/releases)
- [Commits](vercel/next.js@7.0.2...v9.3.2)

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

Author: dependabot[bot]

package.json

@@ -31,7 +31,7 @@
     "firebase-admin": "^8.3.0",
     "isomorphic-unfetch": "^3.0.0",
     "lodash": "^4.17.15",
-    "next": "^7.0.2",
+    "next": "^9.3.2",
     "next-redux-wrapper": "^1.3.5",
     "prop-types": "^15.7.2",
     "raf": "^3.4.1",