CompatHelper: bump compat for "SpecialFunctions" to "2" (#150)

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Author: github-actions[bot]

Project.toml

@@ -28,5 +28,5 @@ DomainSets = "0.1, 0.2, 0.3, 0.4, 0.5"
 DualNumbers = "0.6"
 HypergeometricFunctions = "0.1, 0.2, 0.3"
 LowRankApprox = "0.4, 0.5"
-SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.1"
+SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.1, 2"
 julia = "1.3"