fix: upgrade @oclif/config from 1.14.0 to 1.15.1

Snyk has created this PR to upgrade @oclif/config from 1.14.0 to 1.15.1.

See this package in NPM:
https://www.npmjs.com/package/@oclif/config

See this project in Snyk:
https://app.snyk.io/org/codingtools/project/69f63852-fccf-4e2e-aeaf-6785477b4de5?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@oclif/command": "^1.5.19",
-    "@oclif/config": "^1.14.0",
+    "@oclif/config": "^1.15.1",
     "@oclif/plugin-autocomplete": "^0.1.5",
     "@oclif/plugin-commands": "^1.2.3",
     "@oclif/plugin-help": "^2.2.3",