This answer claims rats had been born in space, but link with confirmation is broken.
Some pregnant rats were in space, but those didn't give birth in space.
This question has good answers regarding reproduction of various animals in space, but not mammals.
This answer contains link describing some plans back in 2016 to breed mice and small rabits in ISS/Kibo facility.
So, are there any fresh updates on the question "Were any mammals born in space"? If not, are there any confirmed planned missions in the nearest future to breed mammals in space?