Unable to update (deprecated OS)

Hi!

I got an iMac 27" late 2012 Intel core i7, 32Gb 1600 Mhz DDR3 RAM and 

NVIDIA GeForce GTX 680MX 2 GB.

Still works great and I´m happy with it. But sence I cant update my OS anymore (I´m on Catalina 10.15.7)

I also cant update my Lightroom Classic. I´m really not happy at all, I pay 120kr/mounth and canot update.

I know things develop but does this updat for LrC really demands an uppdate? In that case I do have to say Thanks and godbye Adobe!

I'm really disappointed and I'm not going to buy a new computer just for Lightroom updates, which probably would have worked fine with the configuration I have. /Thomas