Run python tests CI workflow on dependency update

[demeringo]

Problem

On a pull request, automated tests in CI are launched only when the change updates the codebase or the tests scripts.

Github action is not triggered when the python dependencies are updated.

Solution

Add a condition to trigger the workflow when poetry.lock file is updated.

Alternatives

Additional context or elements

[da-ekchajzer]

Yes this should be mandatory ! Thank you.

I was also wondering if we should add poetry.lock in our commits ? Since it changes depending on the platform (is it ?), I have the feeling that it should only be local, but i am not familiar enough with poetry.

[demeringo]

Not sure either about the poetry.lock, however I noticed that when dependabot opens PR's to update dependencies (using the defaut settings that github provides), it commits an updated poetry.lock, so it is a good trigger in this case.

Also the poetry doc recommends commiting the lock file (ensure reproducible build with exact same versions) unless we are building a library. https://python-poetry.org/docs/basic-usage/#committing-your-poetrylock-file-to-version-control

But I will also extend the conditions to cover multiple triggers:

• requirements.txt
• pyproject.toml