test arm image on an arm runner

Author: rem1776

.github/workflows/github_autotools_gnu.yml

@@ -11,7 +11,7 @@ concurrency:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04-arm
     strategy:
       matrix:
         conf-flag: [ --disable-openmp, --disable-setting-flags, --with-mpi=no, --disable-r8-default]
@@ -20,7 +20,7 @@ jobs:
           - conf-flag: --with-mpi=no
             input-flag: --enable-test-input=/home/unit_tests_input
     container:
-      image: ghcr.io/noaa-gfdl/fms/fms-ci-rocky-gnu:13.2.0
+      image: ghcr.io/noaa-gfdl/fms/fms-ci-rocky-gnu:13.2.0-arm
       env:
         TEST_VERBOSE: 1
         DISTCHECK_CONFIGURE_FLAGS: "${{ matrix.conf-flag }} ${{ matrix.input-flag }} ${{ matrix.io-flag }}"