fix(webhook): Add missing test dependency

Author: npalm

modules/webhook/lambdas/webhook/package.json

@@ -20,6 +20,7 @@
     "@trivago/prettier-plugin-sort-imports": "^3.4.0",
     "@types/aws-lambda": "^8.10.108",
     "@types/express": "^4.17.14",
+    "@types/jest": "^29.2.2",
     "@types/node": "^18.11.9",
     "@typescript-eslint/eslint-plugin": "^5.43.0",
     "@typescript-eslint/parser": "^5.43.0",