Unable to install this package

[yun256237]

When I try to install the package, I get an error. ERROR: dependency 'rgdal' is not available for package 'rOstluft'
I am using R version 4.3.
I used the recommended install command and selected install all.
devtools::install_github("Ostluft/rOstluft.plot")

I have searched for 'rgdal' and got some information:
Package ‘rgdal’ was removed from the CRAN repository.
Formerly available versions can be obtained from the archive.
Archived on 2023-10-16 at the request of the maintainer. Consider using 'sf' or 'terra' instead.

Thank you for your attention and help.