v0.16.1 WebApp validation

Overview

• Added web app data validation as utility
• Fixed shipping option utility
• Updated dependencies

What's Changed

• Bump github.com/valyala/fasthttp from 1.38.0 to 1.39.0 by @dependabot in #53
• Bump github.com/goccy/go-json from 0.9.10 to 0.9.11 by @dependabot in #54

Full Changelog: v0.16.0...v0.16.1