Use debugging arguments for conda index

Since conda index terminates with error during "create conda channel" step of "test_windows", use "--verbose --threads=1" options suggested on https://github.com/conda/conda-index

Author: oleksandr-pavlyk

.github/workflows/conda-package.yml

@@ -207,7 +207,7 @@ jobs:
           echo %CONDA_PREFIX%
           mkdir ${{ env.workdir }}\channel\win-64
           move ${{ env.PACKAGE_NAME }}-*.tar.bz2 ${{ env.workdir }}\channel\win-64
-          conda index ${{ env.workdir }}\channel
+          conda index --verbose --threads=1 ${{ env.workdir }}\channel
           dir ${{ env.workdir }}\channel\win-64
           # Test channel
           conda search ${{ env.PACKAGE_NAME }} -c ${{ env.workdir }}/channel --override-channels --info --json