fix: update tests/e2e noteabooks api hostname

[eggshell]

api now lives under the app. hostname. This will resolve that.

Pull Request Description

What and why?

How to test

What needs special review?

Dependencies, breaking changes, and deployment notes

Release notes

Checklist

• What and why
• Screenshots or videos (Frontend)
• How to test
• What needs special review
• Dependencies, breaking changes, and deployment notes
• Labels applied
• PR linked to Shortcut
• Unit tests added (Backend)
• Tested locally
• Documentation updated (if required)
• Environment variable additions/changes documented (if required)

[github-actions]

PR Summary

This PR updates the API host endpoint used for Notebook Runner tracking in both the GitHub workflow and the notebook execution script. The change replaces the previous URL 'https://api.dev.vm.validmind.ai/api/v1/tracking' with the new URL 'https://app.dev.vm.validmind.ai/api/v1/tracking'. This adjustment ensures that both the integration workflow and the end-to-end notebook execution rely on the updated endpoint for tracking-related operations.

Test Suggestions

• Verify that the integration workflow picks up the new endpoint by running the CI pipeline and confirming that the notebooks are tracked correctly.
• Run end-to-end tests to ensure that API calls from the notebook runner script are successfully reaching the new endpoint.
• Mock or simulate API responses from the new host to confirm that error handling and success flows function as expected.