Fix the daily CI build

[mfitz]

• Fixes CI Builds are broken #291

I've not updated the changelog because this is not a user-facing change.

I used cruft update to bring the CI workflows into line with the cookie-cutter template; that was enough to fix at the broken workflows.

Finding affected files

grep -iRn "mamba" .

./daily-scheduled-ci.yml:22:      cache_mamba_env: false
./daily-scheduled-ci.yml:25:      mamba_env_name: ${{ needs.get-date.outputs.DATE }}

Checklist

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• CHANGELOG updated
• Tests added to cover contribution
• Documentation updated

[mfitz]

Cruft/cookiecutter needs to know this is a public repo, otherwise cruft update complains and errors.