build: modify make command avoid race conditions in macOS build

Author: frangarcj

.github/workflows/build.yml

@@ -68,7 +68,7 @@ jobs:
         mkdir build
         cd build
         cmake ..
-        make -j$(nproc) tarball
+        make tarball
     - name: Upload artifacts
       if: ${{ success() }}
       uses: actions/upload-artifact@v4