Update special requirement from 0.8.1 to 0.10.3 (#1384)

Author: dependabot[bot]

rand_distr/Cargo.toml

@@ -39,4 +39,4 @@ rand = { path = "..", version = "0.9.0", features = ["small_rng"] }
 # Histogram implementation for testing uniformity
 average = { version = "0.13", features = [ "std" ] }
 # Special functions for testing distributions
-special = "0.8.1"
+special = "0.10.3"