fix: futures dep in build dep array

Author: rymnc

fuel-zkvm-primitives-test-fixtures/Cargo.toml

@@ -15,7 +15,6 @@ clap = { version = "^4.0", features = ["derive"], optional = true }
 enum-iterator = { version = "2.1.0", optional = true }
 which = "7.0.0"
 serde = { workspace = true, optional = true }
-futures = "0.3.31"
 
 [build-dependencies]
 forc = "0.66.5"
@@ -39,6 +38,7 @@ anyhow = { workspace = true }
 bincode = { workspace = true }
 tokio = {workspace = true}
 primitive-types = "0.12.2"
+futures = "0.3.31"
 
 [dev-dependencies]
 paste = "1.0"