chore: Allow second token integration tests (#233)

* Add optional `os` argument to Python unit test workflow

* Allow second test user token for integration tests

Author: Pijukatel

.github/workflows/python_integration_tests.yaml

@@ -6,6 +6,10 @@ on:
       APIFY_TEST_USER_PYTHON_SDK_API_TOKEN:
         description: API token of the Python testing user on Apify
         required: true
+      APIFY_TEST_USER_2_API_TOKEN:
+        description: Second API token of different testing user on Apify. For multi-user test cases, such as sharing restricted access storage.
+        required: false
+
     inputs:
       python-versions:
         description: List of Python versions to be used
@@ -51,3 +55,4 @@ jobs:
         run: make INTEGRATION_TESTS_CONCURRENCY=8 integration-tests
         env:
           APIFY_TEST_USER_API_TOKEN: ${{ secrets.APIFY_TEST_USER_PYTHON_SDK_API_TOKEN }}
+          APIFY_TEST_USER_2_API_TOKEN: ${{ secrets.APIFY_TEST_USER_2_API_TOKEN }}