Chore(deps): Bump yargs from 14.2.1 to 15.0.1 (#8)

Bumps [yargs](https://github.com/yargs/yargs) from 14.2.1 to 15.0.1.
- [Release notes](https://github.com/yargs/yargs/releases)
- [Changelog](https://github.com/yargs/yargs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/yargs/commits/v15.0.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -13,6 +13,6 @@
     "node-fetch": "^2.6.0",
     "tachyons": "^4.11.1",
     "tachyons-columns": "^1.0.5",
-    "yargs": "^14.0.0"
+    "yargs": "^15.0.1"
   }
 }