Bump js functionsshopify_function dep.

[lopert]

Background

v2.0.1 was released, which addresses the realm error during buildGraphQLTypes, and now our templates should use it.

Solution

Our templates are hardcoded to use 2.0.0. This PR bumps them to a minimum of 2.0.1, and also makes them grab the latest 2.X version.

Tophat 🎩

shopify app init --flavor=javascript --template=reactRouter --package-manager=pnpm --name js2-0-1-tester

cd js2-0-1-tester

shopify app generate extension --template=discount --flavor=vanilla-js --name test-discount-function-old-package

(^ this should fail, showing the problem)

shopify app generate extension --template=discount --flavor=vanilla-js --name test-discount-function-new-package -u https://github.com/Shopify/extensions-templates.git\#lopert.update-functions-js-package

(^ this should succeed, showing the fix)

Please run through the tophat with other templates as well. (i.e. cart_checkout_validation, cart_transform, payment_customization)

Checklist

• I have 🎩'd these changes
• I have squashed my commits into chunks of work with meaningful commit messages