fix: upgrade config from 3.3.3 to 3.3.6

Snyk has created this PR to upgrade config from 3.3.3 to 3.3.6.

See this package in npm:
https://www.npmjs.com/package/config

See this project in Snyk:
https://app.snyk.io/org/jswheeler/project/40ec7b48-aa71-4806-92cc-22ca798910a9?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -18,7 +18,7 @@
     "@hapi/joi": "^15.1.0",
     "axios": "^0.21.1",
     "bluebird": "^3.5.5",
-    "config": "^3.1.0",
+    "config": "^3.3.6",
     "get-parameter-names": "^0.3.0",
     "lodash": "^4.17.19",
     "no-kafka": "^3.4.3",