upgrade to dbt 1.8 and tests

The problem I’m having

I am planning to update dbt from 1.7 to 1.8.
However, even if everything runs fine locally, I get the warning below.
I don’t understand if this warning is triggered by something or if it is a default.
If it is triggered I don’t understand what generates it since all my tests have been renamed.

The context of why I’m trying to do this

Local upgrade from dbt 1.7 to dbt 1.8

What I’ve already tried

I rename all of my test from tests: to data_tests: (note: we have 2k *.yml files with tests).
I tried looking into the log and changing the debug level but there is no clue if and what something is triggering it.

Some example code or error messages

The `tests` config has been renamed to `data_tests`. Please see
https://docs.getdbt.com/docs/build/data-tests#new-data_tests-syntax for more
information.