fix(ci): enable native feature for pezkuwi-subxt in zombienet crates

The workspace-level pezkuwi-subxt dependency uses default-features = false,
which disables the native feature. The orchestrator and sdk crates inherited
this without explicitly enabling native, causing compile_error in the
prepare-pezcumulus-zombienet-artifacts CI job.

vendor/pezkuwi-zombienet-sdk/crates/orchestrator/Cargo.toml

@@ -23,7 +23,7 @@ hex = { workspace = true }
 libp2p = { workspace = true }
 libsecp256k1 = { workspace = true }
 multiaddr = { workspace = true }
-pezkuwi-subxt = { workspace = true }
+pezkuwi-subxt = { workspace = true, features = ["native"] }
 pezkuwi-subxt-signer = { workspace = true }
 pezsc-chain-spec = { workspace = true }
 pezsp-core = { workspace = true }

vendor/pezkuwi-zombienet-sdk/crates/sdk/Cargo.toml

@@ -16,7 +16,7 @@ keywords = ["blockchain", "pezkuwi", "sdk", "zombienet"]
 async-trait = { workspace = true }
 futures = { workspace = true }
 lazy_static = { workspace = true }
-pezkuwi-subxt = { workspace = true }
+pezkuwi-subxt = { workspace = true, features = ["native"] }
 pezkuwi-subxt-signer = { workspace = true, features = ["subxt"] }
 tokio = { workspace = true }