chore(deps): update jest monorepo to v30

Author: renovate[bot]

backend/package.json

@@ -35,14 +35,14 @@
   "devDependencies": {
     "@types/cors": "2.8.17",
     "@types/express": "5.0.0",
-    "@types/jest": "^29.5.12",
+    "@types/jest": "^30.0.0",
     "@types/node": "^22.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "eslint": "^8.57.0",
     "eslint-config-prettier": "^10.0.0",
     "eslint-plugin-simple-import-sort": "^12.0.0",
-    "jest": "^29.7.0",
+    "jest": "^30.0.0",
     "nodemon": "^3.0.0",
     "prettier": "^3.2.5",
     "ts-jest": "^29.1.2",