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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-JSYAML-13961110

Author: snyk-bot

package-lock.json

@@ -97,7 +97,7 @@
     "swagger-ui-express": "^5.0.0",
     "validator": "^13.9.0",
     "winston": "^3.10.0",
-    "xmlbuilder2": "^3.1.1",
+    "xmlbuilder2": "^4.0.0",
     "xss-clean": "^0.1.1"
   }
 }