Update tests.yml

Author: clintonsteiner

.github/workflows/tests.yml

@@ -45,7 +45,7 @@ jobs:
       uses: uraimo/run-on-arch-action@v3
       with:
         arch: s390x
-        distro: ubuntu24.04
+        distro: ubuntu22.04
         install: |
           apt-get update -q -y
           apt-get install -q -y cmake libssl-dev python3-dev python3-venv wget