CompatHelper: bump compat for "SpecialFunctions" to "0.9" (#93)

Author: github-actions[bot]

Project.toml

@@ -24,6 +24,6 @@ FFTW = "1"
 FastGaussQuadrature = "0.4"
 FastTransforms_jll = "0.2.12"
 Reexport = "0.2"
-SpecialFunctions = "0.8"
+SpecialFunctions = "0.8, 0.9"
 ToeplitzMatrices = "0.6"
 julia = "1.3"