Hum... I guess that means it's still a question mark. My plant id app said albizia julibrissin. Ciaran says sorbus domestica and you think gleditsia triacanthos. I don't think the pics are bad so I'm not sure how to get a definite verdict on this one.
Albizia is bipinnate. There’s a YouTube video supposedly on growing Albizia but showing a different tree with pinnate leaves so there can be confusion. I think I need to raid the neighbours and get leaves for comparison. It’s not a reflection on your pictures. Sometimes young plants are harder to identify than older trees.
Description needs updating, leaves should be pinnate not bipinnate. This is a young plant which immature foliage and so is perhaps looking different to an adult. But I don’t know that I’d say the leaves are finely toothed in my experience. I’ll check a description in the morning. Not that one can see that detail in these images necessarily anyway
Pinnate or bipinnate - both options apparently are found. See description in https://apps.lucidcentral.org/plants_se_nsw/text/entities/gleditsia_triacanthos.htm or https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=ns