fix(deps): update dependency next to v15.4.7 [security]

Author: renovate[bot]

package.json

@@ -21,7 +21,7 @@
     "dayjs": "^1.11.13",
     "lodash": "^4.17.21",
     "motion": "^10.18.0",
-    "next": "15.2.4",
+    "next": "15.4.7",
     "normalize.css": "8.0.1",
     "react": "19.0.0",
     "react-dom": "19.0.0",