I want to convert latin-1 encoding to UTF-8 encoding in R 4.1.3 with the 'iconv' package, but seems it's not available for newer versions of R. Anyone knows which package I can use?

I'm running the R kernel in JupyterLab and got this warning message:

Warning message: "package 'iconv' is not available for this version of R

A version of this package for your version of R might be available elsewhere, see the ideas at https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages"