use up-to-date r-lib action

This will fix #641

Author: zkamvar

.github/workflows/template.yml

@@ -131,9 +131,10 @@ jobs:
 
       - name: Set up R
         if: steps.check-rmd.outputs.count != 0
-        uses: r-lib/actions/setup-r@master
+        uses: r-lib/actions/setup-r@v2
         with:
-          r-version: 'release'
+          use-public-rspm: true
+          install-r: false
 
       - name: Install needed packages
         if: steps.check-rmd.outputs.count != 0

.github/workflows/website.yml

@@ -48,9 +48,10 @@ jobs:
 
       - name: Set up R
         if: steps.check-rmd.outputs.count != 0
-        uses: r-lib/actions/setup-r@master
+        uses: r-lib/actions/setup-r@v2
         with:
-          r-version: 'release'
+          use-public-rspm: true
+          install-r: false
 
       - name: Restore R Cache
         if: steps.check-rmd.outputs.count != 0