Test is only necessary for Julia prior to 1.6

Author: DilumAluthge

test/unit.jl

@@ -26,9 +26,13 @@ end
 end
 
 @testset "warn_if_unexpected_params()" begin
-  params = Dict(:env => ["foo" => "bar"])
-  @test_logs(
-    (:warn, "The user provided the `env` kwarg, but SlurmClusterManager.jl's support for the `env` kwarg requires Julia 1.6 or later"),
-    SlurmClusterManager.warn_if_unexpected_params(params),
-  )
+  if Base.VERSION >= v"1.6"
+    # This test is not relevant for Julia 1.6+
+  else
+    params = Dict(:env => ["foo" => "bar"])
+    @test_logs(
+      (:warn, "The user provided the `env` kwarg, but SlurmClusterManager.jl's support for the `env` kwarg requires Julia 1.6 or later"),
+      SlurmClusterManager.warn_if_unexpected_params(params),
+    )
+  end
 end