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

Author: renovate[bot]

package.json

@@ -35,7 +35,7 @@
     "ky": "1.7.5",
     "lottie-react": "^2.4.1",
     "motion": "^12.23.11",
-    "next": "15.3.2",
+    "next": "15.4.7",
     "overlay-kit": "^1.8.4",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",