Bump engines/shopify_app from `b2c4cf7` to `fd85dc6`
Bump engines/shopify_app from `b2c4cf7` to `fd85dc6`

Bumps [engines/shopify_app](https://github.com/Shopify/shopify_app) from `b2c4cf7` to `fd85dc6`.
- [Release notes](https://github.com/Shopify/shopify_app/releases)
- [Commits](https://github.com/Shopify/shopify_app/compare/b2c4cf7d8c1608e2646b0b952cd28b3df9e14901...fd85dc6e00bcaf55e185b03d20f36de54726cd47)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
eliotsykes/real-world-rails