ci: add lib mamba

Author: lachlangrose

.github/workflows/release-please.yml

@@ -116,7 +116,7 @@ jobs:
           ANACONDA_API_TOKEN: ${{ secrets.ANACONDA_TOKEN  }}
         shell: bash -l {0}
         run: |
-          conda install -c conda-forge conda-build scikit-build numpy cython anaconda-client -y
+          conda install -c conda-forge conda-build scikit-build numpy cython anaconda-client conda-libmamba-solver -y
           conda build -c conda-forge -c loop3d --output-folder conda conda  --python ${{matrix.python-version}}
           conda convert -p all conda/linux-64/*.tar.bz2 -f -o conda
       - name: upload artifacts