Drop Poetry lock file usage

The lock file doesn’t bring benefit to the project development. I think this is interesting for application deployment. Since Silkaj is not being deployed, it doesn’t make sense to keep it. We are not getting the latest version, in case of Pytest and Python v3.10 support, I was stuck with Pytest version not supporting Py3.10.

poetry.lock is not commited to DuniterPy and Tikka, let’s get rid of it.

The pyproject.toml is enough to strictly specify a dependency version. Handling the global hash a bit annoying to handle for rebase between branches introducing or removing, updating a dependency.