Fix checks

Author: giabaio

.github/workflows/check-standard.yaml

@@ -32,8 +32,14 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: ${{ matrix.config.r }}
+          http-user-agent: ${{ matrix.config.http-user-agent }}
+          use-public-rspm: true
+
       - uses: r-lib/actions/setup-pandoc@v2
-      
+
       - name: Double check repos
         run: |
           print(getOption("repos"))