[question] Unrelated changes in conandata.yml affect RREV

- [x] I've read the [CONTRIBUTING guide](https://github.com/conan-io/conan/blob/develop/.github/CONTRIBUTING.md).

When I add a new version to `conandata.yml` it changes RREVs of all other versions listed there (because RREV depends on the hash of the whole file) and so all existing binary packages become obsolete. This is very inconvenient. Maybe Conan could use only the current version subtree in `conandata.yml` when calculating RREV?