ci: add vercel.json (Shopify#12)

## Context

Add config for Vercel

## Changes

Add the json file

## Checklist

- [x] My code follows the style guidelines of this project
- [x] I've performed a self-review of my own code
- [x] I've added a changeset if this PR contains user-facing or
noteworthy changes
- [x] I've commented my code, particularly in hard-to-understand areas
- [x] I've made corresponding changes to the documentation
- [x] I've tested my code for breaking changes and added the
corresponding
      footer in this PR if needed

vercel.json

@@ -0,0 +1,5 @@
+{
+	"github": {
+		"silent": true
+	}
+}