CI on Windows / Linux ARM (#246)

Author: jeroen

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

@@ -18,9 +18,12 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {os: macOS-latest,   r: 'release'}
-          - {os: ubuntu-latest,  r: 'release'}
-          - {os: windows-latest, r: 'release'}
+          - {os: macOS-latest,     r: 'release'}
+          - {os: ubuntu-latest,    r: 'release'}
+          - {os: ubuntu-24.04-arm, r: 'release'}
+          - {os: windows-latest,   r: 'release'}
+          - {os: windows-11-arm,   r: 'release'}
+
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
       R_KEEP_PKG_SOURCE: yes