upgrade CI/CD pages dependencies

.gitlab-ci.yml

@@ -160,8 +160,11 @@ deploy:
 pages:
   stage: deploy
   image: rocker/tidyverse:4.0.1
+  before_script:
+    - apt-get update
+    - apt-get install -y --no-install-recommends "curl libcurl4-openssl-dev libxml2-dev git libssl-dev libharfbuzz-dev libfribidi-dev libfreetype6-dev libpng-dev libtiff5-dev libjpeg-dev qpdf libssh-dev"
   script:
-    - Rscript -e 'install.packages("pkgdown", repos="cloud.r-project.org", ask=FALSE)'
+    - Rscript -e 'install.packages(c("rmarkdown", "pkgdown"), repos="cloud.r-project.org")'
     - Rscript -e 'pkgdown::build_site(override = list(destination = "public"))'
   artifacts:
     paths: