Asana | Fix events stream

[Z33DD]

Description:

According to airbytehq/airbyte#31114 and airbytehq/airbyte#31114, those streams will throw errors if the account doesn't pay for an Asana's paid plan.
The problem with the events' stream is the different pagination style that demands the first request to return a 'Precondition Failed' failed error (412).

About the Events stream, it is broken because of pagination, so it is not related to the paid account issue. I tested this flow with both paid and free accounts, the error is the sync token. I also added a condition in the next_page_token method to stop reading if the API returns has_more as false.

Pagination for HTTP API connectors

Asana API Reference:

• Events
• Portfolios

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This change is 

[Z33DD]

The PR checks are failing for some other connectors. As my code doesn’t affect them, I don’t know how to proceed.
In the case of the Asana source, it's a problem in the way the workflow is configured.

[jgraettinger]

LGTM