Update R-CMD-check.yaml

Author: jgabry

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

@@ -4,7 +4,6 @@ on:
   push:
     branches: [main, master]
   pull_request:
-    branches: [main, master]
 
 name: R-CMD-check.yaml
 
@@ -49,4 +48,5 @@ jobs:
       - uses: r-lib/actions/check-r-package@v2
         with:
           upload-snapshots: true
+          args: 'c("--ignore-vignettes")'
           build_args: 'c("--no-manual", "--no-build-vignettes")'