fix(ci): missing libudunits2.so.0 dependancies for installing mapsf

Refs #5

.gitlab-ci.yml

@@ -61,7 +61,7 @@ bookdown:
   script:
     - R -q -e 'devtools::install(quick = TRUE)'
     - sudo apt-get update && sudo apt-get install -y libudunits2-dev proj-bin libgdal-dev libgeos-dev
-    - R -q -e 'remotes::update_packages(c("bookdown", "ggplot2", "rgdal", "raster", "rgeos"), repos = "http://cran.r-project.org")'
+    - R -q -e 'remotes::update_packages(c("bookdown", "ggplot2", "rgdal", "raster", "rgeos", "mapsf"), repos = "http://cran.r-project.org")'
     - cd bookdown
     - R -q -e 'bookdown::render_book()'
     - sudo apt-get update && sudo apt-get install -y sshpass rsync