Update python-package-conda.yml

Author: levimcclenny

.github/workflows/python-package-conda.yml

@@ -20,6 +20,7 @@ jobs:
         echo $CONDA/bin >> $GITHUB_PATH
     - name: Install dependencies
       run: |
+        conda install --file environment.yml --name base
         conda update --file environment.yml --name base
     - name: Lint with flake8
       run: |