Update Vendure provider to latest API changes

[michaelbromley]

Relates to #349

[vercel]

@michaelbromley is attempting to deploy a commit to the Vercel Solutions Team on Vercel.

A member of the Team first needs to authorize it.

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployments, click below or on the icon next to each commit.

commerce-bigcommerce – ./

🔍 Inspect: https://vercel.com/vercel-solutions-vtest314/commerce-bigcommerce/DJrs8Kt1oLjwFDB6gDeXp8J8h2Kc
✅ Preview: https://commerce-bigco-git-fork-vendure-ecommerce-vendure-349-ve-bcbd6d.vercel.app

commerce-shopify – ./

🔍 Inspect: https://vercel.com/vercel-solutions-vtest314/commerce-shopify/88iENKEQ2LnXvv1v9K5wHnzf1m9P
✅ Preview: https://commerce-shopi-git-fork-vendure-ecommerce-vendure-349-ve-af251d.vercel.app

commerce-swell – ./

🔍 Inspect: https://vercel.com/vercel-solutions-vtest314/commerce-swell/HfD7zE2Lo4SftBLJnnWmCzm556SV
✅ Preview: Failed

commerce-vendure – ./

🔍 Inspect: https://vercel.com/vercel-solutions-vtest314/commerce-vendure/AEYAwDxXj3SkTTRDynw82K1XdAjT
✅ Preview: https://commerce-vendu-git-fork-vendure-ecommerce-vendure-349-ve-2bc6a0.vercel.app

[okbel]

Wonderful! Thank you so much Michael ❤️