Upgrade netavark to the upstream version 2.0.0. This upgrade has one dependency that is currently not yet available: the rust-tower crate is required at version 0.5.3 or later (see tower 0.5.3 dependency in the upstream Cargo.toml at https://github.com/containers/netavark/blob/v2.0.0/Cargo.toml#L63), which has been requested as bug #1133112.