fix(deps): update dependency validator to v13.15.20 [security] (#390)

Author: renovatebot-confluentinc[bot]

package-lock.json

@@ -54,7 +54,7 @@
     "node-vault": "^0.10.2",
     "simple-oauth2": "^5.1.0",
     "uuid": "^11.0.0",
-    "validator": "^13.12.0"
+    "validator": "^13.15.20"
   },
   "scripts": {
     "lint": "make lint",