Transition deployment to manylinux2014_x86_64 docker image
This merge request proposes to:
- Update the version of Conan to Conan v2 to be compliant with Pylene
- Use the manylinux2014_x86_64 docker image for the whole CI in order to deploy using the official image provided by PYPA.
- Fix some issue related to the generation of the Wheel.