Bump Poetry version to 1.7.0

What does this merge request do and why?

This MR bumps Poetry from 1.6.1 to 1.7.0.

https://github.com/python-poetry/poetry/releases/tag/1.7.0

I hope these two fixes will help to reduces chances that poetry.lock is corrupted.

• Fix an issue where dependencies of inactive extras were locked and installed (#8399).
• Fix an issue where build requirements were not installed due to a race condition in the artifact cache (#8517).

See the full change log https://github.com/python-poetry/poetry/compare/1.6.1...1.7.0

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

Merge request checklist

• I've ran the affected pipeline(s) to validate that nothing is broken.
• Tests added for new functionality. If not, please raise an issue to follow up.
• Documentation added/updated, if needed.