Use built-in cached_property on Python 3.8 for Asana provider

[kaxil]

Functionality is the same, this just removes one dep for Py 3.8+

(same as #14606)

---

^ Add meaningful description above

Read the Pull Request Guidelines for more information.
In case of fundamental code change, Airflow Improvement Proposal (AIP) is needed.
In case of a new dependency, check compliance with the ASF 3rd Party License Policy.
In case of backwards incompatible changes please leave a note in UPDATING.md.

[uranusjr]

Oops, I missed #14606 and it’s already merged. There’s actually a shim for this:

from airflow.compat.functools import cached_property

And it handles type hint better; I added a functools.pyi file to manually provide the annotation.

[kaxil]

Oops, I missed #14606 and it’s already merged. There’s actually a shim for this:

from airflow.compat.functools import cached_property

And it handles type hint better; I added a functools.pyi file to manually provide the annotation.

I intentionally skipped providers so that users can use this version of provider in older version of Airflow that does not contain from airflow.compat.functools module

[uranusjr]

Got it!

[github-actions]

The PR most likely needs to run full matrix of tests because it modifies parts of the core of Airflow. However, committers might decide to merge it quickly and take the risk. If they don't merge it quickly - please rebase it to the latest main at your convenience, or amend the last commit of the PR, and push it with --force-with-lease.