[github-actions] Use same artifact preparation for macOS too

.github/workflows/build.yml

@@ -109,7 +109,7 @@ jobs:
       run: |
           mkdir -p dest
           DESTDIR=`pwd`/dest make install
-          tar -C dest -cf libirecovery.tar usr
+          tar -C dest -cf libirecovery.tar --strip-components 1 .
     - name: publish artifact
       uses: actions/upload-artifact@v4
       with: