also include aarch/a64fx in comparison for EESSI 2025.06

Author: boegel

.github/workflows/test_compare_stacks.yml

@@ -23,6 +23,7 @@ jobs:
         - 2023.06
         - 2025.06
         COMPARISON_ARCH:
+        - aarch64/a64fx
         - aarch64/neoverse_n1
         - aarch64/neoverse_v1
         - aarch64/nvidia/grace
@@ -34,6 +35,9 @@ jobs:
         - x86_64/intel/sapphirerapids
         - x86_64/intel/icelake
         - x86_64/intel/cascadelake
+        exclude:
+        - EESSI_VERSION: 2023.06
+          COMPARISON_ARCH: aarch64/a64fx
     steps:
         - name: Check out software-layer repository
           uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1