Update R-CMD-check.yaml

Updated setup-r@v1 to v2

Author: HenriKajasilta

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

@@ -22,7 +22,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: r-lib/actions/setup-pandoc@v2
-      - uses: r-lib/actions/setup-r@v1
+      - uses: r-lib/actions/setup-r@v2
       - name: Install dependencies
         run: |
           install.packages(c("remotes", "rcmdcheck"))