fix: removing yaml dependency

[JGibson2019]

Details

Removed the yaml dependency and updated to a later version of the cosmiconfig package that uses js-yaml instead

Motivation

The older version of yaml had a security vulnerability. Since the dependency was introduced by cosmiconfig, opted to update this package, which switched to the js-yaml parser

Context

Pull request checklist

• [N/A] Addresses an existing issue: Fixes #0000
• [N/A] Added relevant unit test for your changes. (yarn test)
• Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• Ran precheckin (yarn precheckin)