Update R-CMD-check.yaml checkout@v4, update quarto setup

Author: luisgruber

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

@@ -29,12 +29,19 @@ jobs:
       R_KEEP_PKG_SOURCE: yes
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v4
       - uses: r-lib/actions/setup-tinytex@v2
       - run: tlmgr --version
 
       - uses: r-lib/actions/setup-pandoc@v2
+      
       - uses: quarto-dev/quarto-actions/setup@v2
+        if: format('{0}', matrix.config.quarto) != 'false'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          version: ${{ matrix.config.quarto || 'release' }}
+          tinytex: true
 
       - uses: r-lib/actions/setup-r@v2
         with: