Decide on range of supported version for the core dependencies, and test them in CI

[Luthaf]

This was prompted by torch dependencies, but should apply to all of the dependencies of the main code. For all of them, we should decide on the range of supported version, and test with both the lowest and highest supported version on CI.

From the current set of dependencies:

• ase: I guess we only support the latest version?
• torch: we should support more than the latest release, especially for people running on older clusters. metatensor-torch supports up to 1.11, we could do something more recent here (1.13 or even 2.0).
• hydra-core: we'll need some kind of check once Drop hydra? #149 is resolved
• metatensor-xxx: we are pinning these, I think we can continue this way for a while.