Use NOT_CRAN=true for the R-hub GHA jobs

Author: gaborcsardi

.github/workflows/rhub-ci.yaml

@@ -34,6 +34,8 @@ jobs:
         config: ${{ fromJson(needs.setup.outputs.containers) }}
     container:
       image: ${{ matrix.config.container }}
+    env:
+      NOT_CRAN: true
 
     steps:
       - uses: r-hub/actions/checkout@main
@@ -59,6 +61,8 @@ jobs:
       fail-fast: false
       matrix:
         config: ${{ fromJson(needs.setup.outputs.platforms) }}
+    env:
+      NOT_CRAN: true
 
     steps:
       - uses: r-hub/actions/checkout@main