Align poetry version in all Docker files
Currently, the Poetry version set in jobs/cache_maintenance Docker file is different from the one set in all the other Docker files.

This PR aligns the Poetry version in jobs/cache_maintenance Docker file with all the rest.

Related PRs:
- #1017
- #923
Align poetry version in all Docker files: Currently, the Poetry version set in jobs/cache_maintenance Docker file is different from the one set in all the other Docker files.

This PR aligns the Poetry version in jobs/cache_maintenance Docker file with all the rest.

Related PRs:
- #1017
- #923