Update actions versions in test workflow

Author: jonasrenault

.github/workflows/test.yml

@@ -74,7 +74,7 @@ jobs:
         run: pipx install poetry
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ env.PYTHON_VERSION }}
           cache: "poetry"
@@ -96,7 +96,7 @@ jobs:
       # upload-artifact action does not take into account working-directory default
       # see https://github.com/actions/upload-artifact/issues/232
       - name: Archive code coverage results
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: code-coverage-report
           path: backend/htmlcov