fix(deps): update nextjs monorepo to v15.5.5

Author: renovate[bot]

package.json

@@ -25,7 +25,7 @@
     "livekit-server-sdk": "^2.13.2",
     "mime": "^4.0.7",
     "motion": "^12.16.0",
-    "next": "15.5.2",
+    "next": "15.5.5",
     "next-themes": "^0.4.6",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
@@ -40,7 +40,7 @@
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^9",
-    "eslint-config-next": "15.5.2",
+    "eslint-config-next": "15.5.5",
     "eslint-config-prettier": "^10.1.5",
     "eslint-plugin-import": "^2.31.0",
     "eslint-plugin-prettier": "^5.5.0",