Only test alternative build targets on v1.9

It's version dependent.

Author: ChrisRackauckas

test/runtests.jl

@@ -37,7 +37,7 @@ if GROUP == "All" || GROUP == "Core"
     @safetestset "Build Function Test" begin include("build_function.jl") end
     @safetestset "Build Function Array Test" begin include("build_function_arrayofarray.jl") end
     @safetestset "Build Function Array Test Named Tuples" begin include("build_function_arrayofarray_named_tuples.jl") end
-    @safetestset "Build Targets Test" begin include("build_targets.jl") end
+    VERSION >= v"1.9" && @safetestset "Build Targets Test" begin include("build_targets.jl") end
     @safetestset "Latexify Test" begin include("latexify.jl") end
     @safetestset "Domain Test" begin include("domains.jl") end
     @safetestset "SymPy Test" begin include("sympy.jl") end