Test CI on ARM runners

Author: thaaddeus

.github/workflows/ci.yaml

@@ -11,11 +11,12 @@ on:
 jobs:
   ci:
     name: CI
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     strategy:
       matrix:
         node-version: [24.x]
+        os: [ubuntu-latest, ubuntu-24.04-arm]
 
     steps:
       - name: Checkout