support Airflow 2.8.0

[bobelev]

Airflow 2.8.0 has been released https://github.com/apache/airflow/releases/tag/2.8.0

Let's make this plugin compatible

[simpl1g]

@bryzgaloff Hi, is it possible to review this PR? Would be great to bump version and update airflow version 😃

[bryzgaloff]

Hi guys, thank you for bringing the PR up. As you may have noticed, it did not pass some tests, so I was not able to merge it.

However, the tests were failing due to some versions inconsistencies in the packages installed during the tests execution. I have fixed it in #74. That PR is now merge, so please rebase yours onto the latest master: it will apply the versions fix and all the older tests should be passing after that.

[bryzgaloff]

All is good, just requires a rebase to make sure all the tests are passing

[bobelev]

Hi! Rebased, all green.

[bryzgaloff]

Thank you for your valuable contribution! 👏 I have added you to the contributors list in README.

Release v1.2.0 is being published: https://github.com/bryzgaloff/airflow-clickhouse-plugin/releases/tag/v1.2.0

CC @simpl1g

[bryzgaloff]

Unfortunately, there was an issue publishing the pipeline, so the latest release is not yet available: #75

I am on it, some time is needed to fix it.