fix(deps): update nextjs monorepo to v15.4.7

Author: renovate[bot]

public/package-lock.json

@@ -16,7 +16,7 @@
     "katex": "^0.16.22",
     "mathjs": "^14.6.0",
     "motion": "^12.23.12",
-    "next": "15.4.6",
+    "next": "15.4.7",
     "react": "19.1.1",
     "react-dom": "19.1.1",
     "react-katex": "^3.1.0",
@@ -33,7 +33,7 @@
     "@types/react-dom": "^19",
     "@types/react-katex": "^3.0.4",
     "eslint": "^9",
-    "eslint-config-next": "15.4.6",
+    "eslint-config-next": "15.4.7",
     "tailwindcss": "^4",
     "typescript": "^5"
   }