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

Author: CompatHelper Julia

benchmarks/Symbolics/Project.toml

@@ -23,7 +23,7 @@ XSteam = "95ff35a0-be81-11e9-2ca3-5b4e338e8476"
 
 [compat]
 BenchmarkTools = "1"
-CairoMakie = "0.13"
+CairoMakie = "0.13, 0.15"
 Catalyst = "15"
 Chairmarks = "1"
 DataStructures = "0.18"