Update render-readme.yaml

Author: aghaynes

.github/workflows/render-readme.yaml

@@ -16,7 +16,7 @@ jobs:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v2
-      - uses: r-lib/actions/setup-r@v1
+      - uses: r-lib/actions/setup-r@v2
       - uses: r-lib/actions/setup-pandoc@v1
       - name: Install rmarkdown, remotes, and the local package
         run: |