CI-Fix (#26)

Author: benjamin-lieser

distr_test/Cargo.toml

@@ -10,6 +10,6 @@ rand = { version = "0.9.0", features = ["small_rng"] }
 num-traits = "0.2.19"
 # Special functions for testing distributions
 special = "0.11.0"
-spfunc = "0.1.0"
+spfunc = "=0.1.0"
 # Cdf implementation
 statrs = "0.17.1"