Add dbt Core 1.11 to test matrix

[tatiana]

There have been a few releases of dbt Core 1.11 since December 19th:

This PR aims to validate the latest dbt version against Cosmos tests to identify potential issues.

We temporarily enabled running tests against this branch to confirm that GH Actions Jobs were working. Example of CI job run:
https://github.com/astronomer/astronomer-cosmos/actions/runs/20570466441

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.98%. Comparing base (ebc74f9) to head (3532f08).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2230   +/-   ##
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  Coverage   97.98%   97.98%           
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  Files          95       95           
  Lines        6190     6190           
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  Hits         6065     6065           
  Misses        125      125           

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[Copilot]

Pull request overview

This PR adds dbt-core 1.11 to the testing matrix to validate compatibility with the latest dbt version. The changes update both the project configuration and CI workflow to include dbt 1.11 in automated testing.

Key Changes:

• Added dbt 1.11 to the test matrix in project configuration
• Updated CI workflow to test against dbt 1.11 across different Python and Airflow versions
• Temporarily enabled CI runs on the support branch for validation

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
pyproject.toml	Added "1.11" to the dbt version matrix for comprehensive testing across all supported versions
.github/workflows/test.yml	Updated dbt-version parameters to "1.11" in multiple test jobs and added temporary branch trigger for CI validation

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[pankajkoti]

Looks good. Inline suggestions to also preserve 1.10, along with 1.11, to run the Unit Integration and Kubernetes tests since it's still a supported version. WDYT?

[tatiana]

Thanks for the quick review, @pankajkoti !

Looks good. Inline suggestions to also preserve 1.10, along with 1.11, to run the Unit Integration and Kubernetes tests, since it's still a supported version. WDYT?

For unit tests, it does not make sense because they should not rely on dbt being installed.

For integration tests, it would be too expensive to run them against all supported versions of Python and Airflow (currently, the matrix spans 32 jobs). By having two dbt versions, we'd have 64 - if we were to add all dbt versions that didn't reach EOL. It would be 128).

In most cases, Cosmos does not rely on specific features of dbt versions - except for two scenarios:

• the async implementation
• dbt 1.5
  Both of which have dedicated integration test jobs.

I'm happy for us to have a more extensive dbt version testing in the CI. That said, I don't believe the solution is to multiply the existing Py & Airflow matrix by also having multiple dbt versions.

WDYT of logging a dedicated ticket for us to review and develop a better strategy? We could run a subset of integration tests with a varying matrix of AF & dbt, but pin the Python version. It feels this is outside of the scope of the current ticket.

[pankajkoti]

Sounds all good to me @tatiana 👍🏽

[tatiana]

Logged: #2234