Use Todoist's Sync API v9 and pass token as header

[goncalossilva]

v8 was deprecated on December 5, 2022, and passing tokens as query parameters will stop working soon.

I didn't notice any other incompatibility, but here's the migration guide from v8: https://developer.todoist.com/sync/v9/#migrating-from-v8

[saturn-abhishek]

@CodiumAI-Agent /review

[QodoAI-Agent]

PR Reviewer Guide 🔍

(Review updated until commit c0695a3)

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review API Migration Verify that the change to using axios.get with the v9 endpoint and token passed in the header works as expected and maintains compatibility with the previous behavior. const stats = await axios.get( "https://api.todoist.com/sync/v9/completed/get_stats", { headers: { Authorization: `Bearer ${TODOIST_API_KEY}` } }

[goncalossilva]

This PR will still work for now, but note that the Todoist API v1 has just been released which means Sync API v9 will be deprecated in the near future. Migration documentation is available here.

It should still be a small change for this project:

[QodoAI-Agent]

Persistent review updated to latest commit c0695a3