add default shell to action

.github/workflows/deploy_docs.yaml

@@ -12,6 +12,9 @@ env:
 jobs:
   build-docs:
     runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -l {0}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -26,13 +29,10 @@ jobs:
           environment-file: environment.yml
 
       - name: Install Dependencies
-        run: pip install .[dev]
+        run: python -m pip install .[dev]
 
       - name: Build Documentation
-        run: |
-          which python
-          make docs
-
+        run: make docs
 
       - name: Deploy to gh-pages
         uses: JamesIves/github-pages-deploy-action@v4