Add pip list command

Author: charavelg

.github/workflows/test_against_nightly_deps.yaml

@@ -22,5 +22,7 @@ jobs:
           pip install --pre --upgrade --timeout=60 --extra-index $dev_anaconda_url .[tests,all_features]
         name: 'Install tslearn and nightly dependencies'
       - shell: bash
-        run: pytest -vsl tslearn --doctest-modules
+        run: |
+          pip list
+          pytest -vsl tslearn --doctest-modules
         name: 'Run tests'