chore(deps): Bump oas from 3.1.5 to 3.1.6 (#170)

Bumps [oas](https://github.com/readmeio/oas/tree/HEAD/packages/cli) from 3.1.5 to 3.1.6.
- [Release notes](https://github.com/readmeio/oas/releases)
- [Changelog](https://github.com/readmeio/oas/blob/master/CHANGELOG.md)
- [Commits](https://github.com/readmeio/oas/commits/v3.1.6/packages/cli)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>