fix docs workflowg

Author: stefdoerr

.github/workflows/docs.yml

@@ -25,13 +25,10 @@ jobs:
           workload_identity_provider: ${{ secrets.GCP_WORKLOAD_IDENTITY_PROVIDER_DOCS }}
           service_account: ${{ secrets.GCP_DOC_SERVICE_ACCOUNT }}
 
-      - uses: conda-incubator/setup-miniconda@v2
+      - uses: conda-incubator/setup-miniconda@v3
         with:
-          auto-update-conda: true
           python-version: "3.10"
-          uses-mamba: true
-          miniforge-variant: Mambaforge
-          channels: acellera,conda-forge,pytorch,defaults
+          channels: acellera,conda-forge,defaults
 
       - name: Install conda deps
         run: |