fix(deps): update nextjs monorepo to v14.2.21 (#593)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -13,7 +13,7 @@
     "e2e": "playwright test"
   },
   "dependencies": {
-    "next": "14.2.20",
+    "next": "14.2.21",
     "react": "18.3.1",
     "react-dom": "18.3.1"
   },
@@ -26,7 +26,7 @@
     "@types/react-dom": "18.3.5",
     "autoprefixer": "10.4.20",
     "eslint": "8.57.1",
-    "eslint-config-next": "14.2.20",
+    "eslint-config-next": "14.2.21",
     "husky": "8.0.3",
     "postcss": "8.4.49",
     "prettier": "3.4.2",