Include setting up protobuffers into the rhub workflow

.github/workflows/rhub.yaml

@@ -15,9 +15,9 @@ on:
       config:
         description: 'A comma separated list of R-hub platforms to use.'
         type: string
-        default: 'linux,windows,macos'
+        default: 'linux,windows,macos,macos-arm64'
       name:
-        description: 'Run name. You can leave this empty now.'
+        description: 'rhub'
         type: string
       id:
         description: 'Unique ID. You can leave this empty now.'
@@ -33,6 +33,10 @@ jobs:
 
     steps:
     # NO NEED TO CHECKOUT HERE
+    - name: Install protobuf headers
+      if: runner.os == 'Linux'
+      run: sudo apt update -y && sudo apt install -y protobuf-compiler libprotobuf-dev libprotoc-dev
+
     - uses: r-hub/actions/setup@v1
       with:
         config: ${{ github.event.inputs.config }}