ci: Add ARM runners

Add a GitHub ARM runner for the build tests.

Signed-off-by: Naushir Patuck <[email protected]>

Author: naushir

.github/workflows/libpisp-build-test.yaml

@@ -12,7 +12,7 @@ on:
 jobs:
   build-test:
 
-    runs-on: [ ubuntu-latest ]
+    runs-on: [ ubuntu-latest, ubuntu-24.04-arm ]
 
     strategy:
       matrix: