skip vignettes

Author: jgabry

.github/workflows/R-CMD-check.yaml

@@ -80,7 +80,7 @@ jobs:
         env:
           _R_CHECK_CRAN_INCOMING_: false
           _R_CHECK_FORCE_SUGGESTS_: false
-        run: rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran"), error_on = "warning", check_dir = "check")
+        run: rcmdcheck::rcmdcheck(args = c("--no-manual", "--as-cran", "--ignore-vignettes"), build_args = c("--no-build-vignettes"), error_on = "warning", check_dir = "check")
         shell: Rscript {0}
 
       - name: Show testthat output