DESCRIPTION: add codetools to Suggests

DESCRIPTION

@@ -12,7 +12,7 @@ Authors@R: c(
 Description: An interface between the 'GRASS' geographical information system ('GIS') and 'R', based on starting 'R' from within the 'GRASS' 'GIS' environment, or running a free-standing 'R' session in a temporary 'GRASS' location; the package provides facilities for using all 'GRASS' commands from the 'R' command line. The original interface package for 'GRASS 5' (2000-2010) is described in Bivand (2000) <doi:10.1016/S0098-3004(00)00057-1> and Bivand (2001) <https://www.r-project.org/conferences/DSC-2001/Proceedings/Bivand.pdf>. This was succeeded by 'spgrass6' for 'GRASS 6' (2006-2016) and 'rgrass7' for 'GRASS 7' (2015-present). The 'rgrass' package modernizes the interface for 'GRASS 8' while still permitting the use of 'GRASS 7'.
 Depends: R (>= 3.5.0)
 Imports: stats, utils, methods, xml2
-Suggests: terra (>= 1.6-16), sp (>= 0.9), knitr, rmarkdown, sf, stars, raster (>= 3.6-3)
+Suggests: terra (>= 1.6-16), sp (>= 0.9), knitr, rmarkdown, sf, stars, raster (>= 3.6-3), codetools
 VignetteBuilder: knitr
 SystemRequirements: GRASS (>= 7)
 License: GPL (>= 2)