fix(deps): update nextjs monorepo to v15.4.4

Author: renovate[bot]

package-lock.json

@@ -36,14 +36,14 @@
     "date-fns": "^3.6.0",
     "dotenv": "^16.5.0",
     "eslint": "8.57.1",
-    "eslint-config-next": "15.4.2",
+    "eslint-config-next": "15.4.4",
     "i18next": "25.2.1",
     "i18next-browser-languagedetector": "^8.2.0",
     "i18next-resources-to-backend": "^1.2.1",
     "js-cookie": "^3.0.5",
     "mui-tiptap": "^1.18.1",
     "nanoid": "^5.1.5",
-    "next": "15.4.2",
+    "next": "15.4.4",
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "react-dropzone": "^14.3.8",