CompatHelper: bump compat for CairoMakie to 0.15 for package docs, (keep existing compat)

Author: CompatHelper Julia

docs/Project.toml

@@ -50,7 +50,7 @@ Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 [compat]
 BenchmarkTools = "1.5"
 BifurcationKit = "0.4.4"
-CairoMakie = "0.12, 0.13"
+CairoMakie = "0.12, 0.13, 0.15"
 Catalyst = "15"
 DataFrames = "1.6"
 DataInterpolations = "7.2, 8"