Fixed ZetaComponents dependencies

All dependencies are now correctly set in `ezpublish-legacy` (see https://github.com/ezsystems/ezpublish-legacy/pull/1081) and `ezpublish-kernel` (see https://github.com/ezsystems/ezpublish-kernel/pull/1008).

No need to specify ZetaComponents manually here as we use last releases for now on.