ci(cd): replace tree with portable find listing

Author: gajop

.github/workflows/cd.yaml

@@ -78,7 +78,7 @@ jobs:
           [ -d build/src/build/ ] && mv build/src/build/* build/build/
           rm -rf build/src/{bin,files,build}
 
-          tree -a -L 3 build
+          find build -maxdepth 3 -print | sort
 
       - name: Prepare packaged assets
         run: |