Fix `Activity.all_by_actor_and_id/2` test

test/activity_test.exs

@@ -213,7 +213,11 @@ test "all_by_actor_and_id/2" do
 
     assert [] == Activity.all_by_actor_and_id(user, [])
 
-    assert [%Activity{id: ^id2}, %Activity{id: ^id1}] =
-             Activity.all_by_actor_and_id(user.ap_id, [id1, id2])
+    activities =
+      user.ap_id
+      |> Activity.all_by_actor_and_id([id1, id2])
+      |> Enum.sort(&(&1.id < &2.id))
+
+    assert [%Activity{id: ^id1}, %Activity{id: ^id2}] = activities
   end
 end