Add xz installation and check in macOS test setup

Author: pablomendezroyo

.github/workflows/test.yml

@@ -40,10 +40,11 @@ jobs:
         uses: actions/checkout@v6
       - name: Install Docker client and Colima
         run: |
-          brew install docker docker-compose colima
+          brew install docker docker-compose colima xz
           mkdir -p "$HOME/.docker/cli-plugins"
           ln -sf "$(command -v docker-compose)" "$HOME/.docker/cli-plugins/docker-compose"
           docker compose version
+          xz --version
       - name: Start Colima
         run: |
           colima start --cpu 2 --memory 4 --disk 20

scripts/dappnode_install.sh

@@ -188,6 +188,7 @@ check_prereqs() {
     fi
 
     require_downloader
+    require_cmd xz
 
     # Ensure compose is available (Docker Desktop / modern docker engine)
     if ! docker compose version >/dev/null 2>&1; then