Modify handling of Sony Venice color spaces

At the ACES meeting today, there was discussion about Sony phasing out the Venice version of their color spaces.

Please see this ACES PR:
https://github.com/aces-aswf/aces-input-and-colorspaces/pull/24#pullrequestreview-3575742962

Possible actions would include:
- Modifying the family attribute to put them under a Legacy hierarchy
- Putting them in the inactive_colorspaces list
- Decide on a timeline for when to remove them from the config

Start with the linked ACES pull request and inspect the current Sony Venice color-space configuration in this repository. Resolve whether the entries should use a Legacy family, move to inactive_colorspaces, or be removed on an agreed timeline; done means the chosen policy is reflected in the configuration.

Written by the indexing model from the issue text.