fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-BABELHELPERS-9397697
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116
- https://snyk.io/vuln/SNYK-JS-BRACEEXPANSION-9789073

package.json

@@ -9,7 +9,7 @@
         "eslint-plugin-react": "^7.34.3",
         "eslint-plugin-unused-imports": "^3.2.0",
         "globals": "^15.6.0",
-        "jest": "^29.7.0",
+        "jest": "^30.0.0",
         "mailparser": "^3.7.1",
         "ts-node": "^10.9.2",
         "typeorm": "^0.3.20"