fix(testing): Use @clerk/backend package to fetch tokens

[anagstef]

Description

Drops the custom fetch to BAPI, and replaces it with using the @clerk/backend package.

Checklist

• npm test runs as expected.
• npm run build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: 69e0684

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@clerk/testing	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[anagstef]

!snapshot

[clerk-cookie]

Hey @anagstef - the snapshot version command generated the following package versions:

Package	Version
gatsby-plugin-clerk	5.0.0-beta.45
@clerk/testing	1.1.10-snapshot.ve48d86f

Tip: Use the snippet copy button below to quickly install the required packages.
gatsby-plugin-clerk

npm i gatsby-plugin-clerk@5.0.0-beta.45 --save-exact

@clerk/testing

npm i @clerk/testing@1.1.10-snapshot.ve48d86f --save-exact

[anagstef]

!snapshot

[clerk-cookie]

Hey @anagstef - the snapshot version command generated the following package versions:

Package	Version
gatsby-plugin-clerk	5.0.0-beta.45
@clerk/testing	1.1.10-snapshot.v69e0684

Tip: Use the snippet copy button below to quickly install the required packages.
gatsby-plugin-clerk

npm i gatsby-plugin-clerk@5.0.0-beta.45 --save-exact

@clerk/testing

npm i @clerk/testing@1.1.10-snapshot.v69e0684 --save-exact

[dimkl]

@anagstef What was the reason behind this change?

[anagstef]

@dimkl Using our backend package is cleaner, instead of hitting our BAPI directly with a fetch