Update dependency next to v14.2.21 [SECURITY]

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
     "@uploadcare/nextjs-loader": "1.0.0",
     "classnames": "2.5.1",
     "modern-normalize": "1.1.0",
-    "next": "14.2.10",
+    "next": "14.2.21",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "react-instantsearch-dom": "6.40.4",