Fix celery/django versions in tests workflow

Author: nikmolnar

.github/workflows/python-package.yml

@@ -31,20 +31,20 @@ jobs:
         python -m pip install poetry
         poetry env use system
 
-    - name: Install celery
+    - name: Install dependencies
       run: |
-        poetry run pip install "celery==${{ matrix.celery-version }}"
+        poetry env use system
+        poetry install
 
-    - name: Install Django
+    - name: Install celery
       run: |
-        poetry run pip install "django==${{ matrix.django-version }}"
+        poetry run pip install --force-reinstall "celery==${{ matrix.celery-version }}"
 
-    - name: Install dependencies
+    - name: Install Django
       run: |
-        poetry env use system
-        poetry install
+          poetry run pip install --force-reinstall "django==${{ matrix.django-version }}"
 
     - name: Run tests
       run: |
         echo "Using celery version " `poetry run celery --version`
-        poetry run pytest
+        poetry run python -m pytest