fix: packages/core/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116

Author: snyk-bot

packages/core/package.json

@@ -51,7 +51,7 @@
     "eslint-config-prettier": "^10.1.2",
     "eslint-plugin-jest": "^28.8.0",
     "import-sort-style-module": "^6.0.0",
-    "jest": "^29.5.0",
+    "jest": "^30.0.0",
     "lint-staged": "^16.0.0",
     "prettier": "^3.3.3",
     "prettier-plugin-import-sort": "^0.0.7",