There is currently no package for Inkscape 0.92.3 available for macOS.
If you can help change that, please contact Inkscape developers via the developers' mailing list or IRC (#inkscape-devel on freenode).
O Inkscape é Livre e de Código Aberto licenciado sob GPL.
Com agradecimentos a:
Fastly
OSUOSL
Sponsors
Os Autores
macOS