fix(deps): update nextjs monorepo to v14.2.21

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
         "drizzle-orm": "^0.36.0",
         "lucia": "^3.2.0",
         "mysql2": "^3.11.0",
-        "next": "14.2.16",
+        "next": "14.2.21",
         "oslo": "^1.2.1",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
@@ -42,7 +42,7 @@
 
         "drizzle-kit": "^0.27.0",
         "eslint": "^8.57.0",
-        "eslint-config-next": "14.2.16",
+        "eslint-config-next": "14.2.21",
         "eslint-config-prettier": "^9.1.0",
         "eslint-plugin-drizzle": "^0.2.3",
         "postcss": "^8.4.40",