Update R CMD check GHA

Author: juba

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

@@ -30,19 +30,19 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - uses: r-lib/actions/setup-pandoc@master
+      - uses: r-lib/actions/setup-pandoc@v1
 
-      - uses: r-lib/actions/setup-r@master
+      - uses: r-lib/actions/setup-r@v1
         with:
           r-version: ${{ matrix.config.r }}
           http-user-agent: ${{ matrix.config.http-user-agent }}
           use-public-rspm: true
 
-      - uses: r-lib/actions/setup-r-dependencies@master
+      - uses: r-lib/actions/setup-r-dependencies@v1
         with:
           extra-packages: rcmdcheck
 
-      - uses: r-lib/actions/check-r-package@master
+      - uses: r-lib/actions/check-r-package@v1
 
       - name: Show testthat output
         if: always()