Fix upload failure due to missing 'six' module dependency

[Copilot]

Problem

Result uploading was failing in the Helix CI environment with the following error:

Traceback (most recent call last):
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/performance/scripts/benchmarks_ci.py", line 327, in main
    import upload
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/performance/scripts/upload.py", line 4, in <module>
    from azure.storage.blob import BlobClient, ContentSettings
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/.venv/lib/python3.10/site-packages/azure/storage/blob/__init__.py", line 10, in <module>
    from ._blob_client import BlobClient
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/.venv/lib/python3.10/site-packages/azure/storage/blob/_blob_client.py", line 17, in <module>
    import six
ModuleNotFoundError: No module named 'six'

Root Cause

The azure.storage.blob package (version 12.13.0) has an internal dependency on the six module (a Python 2 and 3 compatibility library). While six is imported throughout the azure.storage.blob codebase (_blob_client.py, _container_client.py, _upload_helpers.py, etc.), it was not explicitly listed in our project dependencies.

Solution

Added six==1.17.0 to the project dependencies in two locations:

1. requirements.txt - For documentation and local development
2. scripts/run_performance_job.py - Added to the pip install commands that execute in the Helix CI environment (where the actual failure was occurring)

This ensures the six module is available when azure.storage.blob attempts to import it during result uploading.

Testing

Verified that the six module can be imported successfully, resolving the import chain: benchmarks_ci.py → upload.py → azure.storage.blob → six

Fixes the issue reported where uploads were failing due to the missing module.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Upload is failing due to missing module six</issue_title>
<issue_description>Result uploading is failing due to the following error:

Traceback (most recent call last):
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/performance/scripts/benchmarks_ci.py", line 339, in <module>
    main(sys.argv[1:])
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/performance/scripts/performance/tracer.py", line 100, in wrapped
    return func(*args, **kwargs)
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/performance/scripts/benchmarks_ci.py", line 327, in main
    import upload
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/performance/scripts/upload.py", line 4, in <module>
    from azure.storage.blob import BlobClient, ContentSettings
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/.venv/lib/python3.10/site-packages/azure/storage/blob/__init__.py", line 10, in <module>
    from ._blob_client import BlobClient
  File "/home/helixbot/work/A0B5090B/w/ADE60940/e/.venv/lib/python3.10/site-packages/azure/storage/blob/_blob_client.py", line 17, in <module>
    import six
ModuleNotFoundError: No module named 'six'
```</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

Fixes #5016

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[DrewScoggins]

LGTM