Update to mamba-org/setup-micromamba@v1

[jtpio]

As noticed in https://github.com/voila-dashboards/voici-demo/actions/runs/7567527338?pr=20:

This action is deprecated and no longer maintained. Please use mamba-org/setup-micromamba instead. See https://github.com/mamba-org/provision-with-micromamba#migration-to-setup-micromamba for a migration guide.

So we should update this line:

voici-demo/.github/workflows/deploy.yml

Line 24 in 0af62ae

uses: mamba-org/provision-with-micromamba@main