add cctools arm builds

Author: mamoreau-devolutions

.github/workflows/cctools-prebuilt.yml

@@ -7,16 +7,22 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [ x86_64 ]
-        os: [ ubuntu-20.04, ubuntu-22.04, ubuntu-24.04 ]
+        arch: [ x86_64, aarch64 ]
+        os: [ ubuntu-22.04, ubuntu-24.04 ]
 
         include:
-          - os: ubuntu-20.04
-            runner: ubuntu-20.04
           - os: ubuntu-22.04
+            arch: x86_64
             runner: ubuntu-22.04
           - os: ubuntu-24.04
+            arch: x86_64
             runner: ubuntu-24.04
+          - os: ubuntu-22.04
+            arch: aarch64
+            runner: ubuntu-22.04-arm
+          - os: ubuntu-24.04
+            arch: aarch64
+            runner: ubuntu-24.04-arm
 
     steps:
       - name: Configure Linux runner