Merge pull request #21 from tkphd/ci-confabulation

Attempt to resolve `rlang` build error by keeping R from previous action.

.github/workflows/pr-receive.yaml

@@ -70,7 +70,7 @@ jobs:
         uses: r-lib/actions/setup-r@v2
         with:
           use-public-rspm: true
-          install-r: false
+          install-r: true
 
       - name: "Set up Pandoc"
         uses: r-lib/actions/setup-pandoc@v2