CompatHelper: bump compat for "Functors" to "0.2" (#246)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: David Widmann <devmotion@users.noreply.github.com>

Author: github-actions[bot]

Project.toml

@@ -1,6 +1,6 @@
 name = "KernelFunctions"
 uuid = "ec8451be-7e33-11e9-00cf-bbf324bd1392"
-version = "0.9.3"
+version = "0.9.4"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
@@ -25,7 +25,7 @@ Compat = "3.7"
 CompositionsBase = "0.1"
 Distances = "0.10"
 FillArrays = "0.10, 0.11"
-Functors = "0.1"
+Functors = "0.1, 0.2"
 Requires = "1.0.1"
 SpecialFunctions = "0.8, 0.9, 0.10, 1"
 StatsBase = "0.32, 0.33"