Re-implementing mistakenly removed ARM exclusion

Author: LukasAud

.github/workflows/ci.yml

@@ -15,5 +15,5 @@ jobs:
     needs: Spec
     uses: "puppetlabs/cat-github-actions/.github/workflows/module_acceptance.yml@main"
     with:
-      flags: "--nightly"
+      flags: "--nightly --arch-exclude aarch64"
     secrets: "inherit"