CompatHelper: bump compat for CairoMakie to 0.15 for package docs, (keep existing compat) (#71)

Co-authored-by: CompatHelper Julia <[email protected]>
Co-authored-by: Andrew Winters <[email protected]>

Author: 3 people

docs/Project.toml

@@ -8,7 +8,7 @@ TrixiBottomTopography = "86af9953-43df-404b-8eaa-d20d82623a82"
 TrixiShallowWater = "804cb1fc-5b08-4398-a671-a789bfe091b3"
 
 [compat]
-CairoMakie = "0.13"
+CairoMakie = "0.13, 0.15"
 Changelog = "1.1"
 Documenter = "1.3"
 OrdinaryDiffEqLowStorageRK = "1.3"