Update conda setup: enable base environment activation and install conda-build tools

Author: rbeucher

.github/workflows/cd.yml

@@ -138,11 +138,12 @@ jobs:
         with:
           miniconda-version: "latest"
           python-version: 3.11
-          environment-file: .conda/environment.yml
-          activate-environment: moppy_env
           auto-update-conda: false
-          auto-activate-base: false
+          auto-activate-base: true
           show-channel-urls: true
+      - name: Install conda-build tools into base
+        shell: bash -l {0}
+        run: conda install -n base -c conda-forge conda-build conda-verify anaconda-client -y
       - name: Build and upload the conda package
         uses: ACCESS-NRI/action-build-and-upload-conda-packages@d97711bc4445ba5c4de55f5a1bccbd4815286289
         with: