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

Author: CompatHelper Julia

docs/Project.toml

@@ -10,7 +10,7 @@ TuringGLM = "0004c1f4-53c5-4d43-a221-a1dac6cf6b74"
 
 [compat]
 CSV = "0.10"
-CairoMakie = "0.14"
+CairoMakie = "0.15"
 CategoricalArrays = "0.10"
 DataFrames = "1"
 Documenter = "1"