Remove openlineage exclusion

[potiuk]

Now that Airflow 2.7.0 is released, we can remove exclusion that we had for openlineage which prevented from using it as dependency of Airflow in CI.

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[potiuk]

We need to solve a bit chicken-egg problem with this one for >= 2.7.0 in openlinage provider.

For the record - this is the sequence that should work:

• Release 2.7.0 in PyPI (done)
• Tag constraints with constraints-2.7.0 in constraints-2-7 (in-progrees)
• Build image for 2.7.0 in Dockerhub (in-progrees)
• Update Airlfow version to 2.8.0.dev0 in main
• Rebase + Merge this one to main
• Cherry-pick this one to v2-7-test
• move constraints-2.7.0 tag for constraints after updated constraints are pushed to constraints-2-7
• rebuild image for 2.7.0 in Dockerhub

One time process to go through (cc: @ephraimbuddy )

[potiuk]

This one failed, but I looked at it and it only failed because we run it from PR and it missed the "openlineage" provider in "installed_providers.txt" - this will get fixed automatically after merging to main. Merging.