fix: upgrade type-fest from 0.6.0 to 0.15.1

Snyk has created this PR to upgrade type-fest from 0.6.0 to 0.15.1.

See this package in NPM:
https://www.npmjs.com/package/type-fest

See this project in Snyk:
https://app.snyk.io/org/twilio-labs/project/6fcbfc7a-1d69-4e68-8d1d-79f82dca5924?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package.json

@@ -75,7 +75,7 @@
     "terminal-link": "^1.3.0",
     "title": "^3.4.1",
     "twilio": "^3.43.1",
-    "type-fest": "^0.6.0",
+    "type-fest": "^0.15.1",
     "window-size": "^1.1.1",
     "wrap-ansi": "^5.1.0",
     "yargs": "^13.2.2"