If your Ubuntu version or derivative has not packaged Inkscape 1.3 for you yet, you can install the current version from our ppa for Ubuntu 20.04, 22.04, 23.04 and 23.10:
ppa:inkscape.dev/stable
sudo add-apt-repository ppa:inkscape.dev/stable sudo apt update sudo apt install inkscape
Inkscape je slobodan softver otvorenog koda, licenciran pod općom javnom licencom (GPL).