Adjust to Julia 1.12 change to implicit world age increment

Julia 1.12 will no longer implicitly increment world ages within
expressions. However, we will likely retain world age increments
between statements of a `@testset`, so all that's needed here
is to move the `load` to a separate like. More explicitly,
the `collect`s could be `invokelatest`'ed instead.

test/loadsave.jl

@@ -401,7 +401,9 @@ end
 if VERSION >= v"1.3" begin
     @testset "CSV load from URL via CSVFiles (#320)" begin
         f = joinpath("files", "data.csv")
-        @test collect(load(f)) == collect(load("https://raw.githubusercontent.com/queryverse/CSVFiles.jl/v0.2.0/test/data.csv"))
+        c1 = load(f)
+        c2 = load("https://raw.githubusercontent.com/queryverse/CSVFiles.jl/v0.2.0/test/data.csv")
+        @test collect(c1) == collect(c2)
     end
 end