update orx-parallel dependency features

Author: orxfun

Cargo.toml

@@ -17,7 +17,7 @@ orx-fixed-vec = { version = "3.17.0", default-features = false }
 orx-split-vec = { version = "3.17.0", default-features = false }
 orx-concurrent-iter = { version = "2.1.0", default-features = false }
 orx-selfref-col = { version = "2.9.0", default-features = false }
-orx-parallel = { version = "2.1.0", optional = true }
+orx-parallel = { version = "2.1.0", default-features = false, optional = true }
 
 [dev-dependencies]
 clap = { version = "4.5.38", features = ["derive"] }