fix: Use bash shell for poetry commands in CI

This commit fixes the CI failure on Windows by explicitly setting the shell to bash for all steps that use the poetry command. This ensures that the poetry command is available in the PATH and can be executed correctly.

Author: google-labs-jules[bot]

.github/workflows/ci-cd.yml

@@ -49,6 +49,7 @@ jobs:
 
       - name: Configure Poetry
         run: poetry config virtualenvs.in-project true
+        shell: bash
 
       - name: Cache dependencies
         uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830
@@ -60,9 +61,11 @@ jobs:
 
       - name: Install dependencies
         run: poetry install --no-interaction --no-root
+        shell: bash
 
       - name: Run tests
         run: poetry run pytest
+        shell: bash
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7