ci: Run on ARM runners in addition to x64

Author: nschonni

.github/workflows/build-test.yml

@@ -51,7 +51,9 @@ jobs:
     if: ${{ fromJson(needs.gen-matrix.outputs.matrix) }}
     needs: gen-matrix
     name: build
-    runs-on: ubuntu-latest
+    runs-on:
+      - ubuntu-24.04
+      - ubuntu-24.04-arm
     timeout-minutes: 60
     strategy:
       fail-fast: false