chore: Upgrade Python requirements

[edx-requirements-bot]

Python requirements update. Please review the changelogs for the upgraded packages.

[edx-requirements-bot]

List of packages in the PR without any issue.

• boto3 changes from 1.39.4 to 1.39.9
• botocore changes from 1.39.4 to 1.39.9
• certifi changes from 2025.7.9 to 2025.7.14
• distlib changes from 0.3.9 to 0.4.0
• nh3 changes from 0.2.21 to 0.3.0
• s3transfer changes from 0.13.0 to 0.13.1
• tox changes from 4.27.0 to 4.28.0

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.35%. Comparing base (9c427c9) to head (578299f).
⚠️ Report is 19 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #308   +/-   ##
=======================================
  Coverage   55.35%   55.35%           
=======================================
  Files           3        3           
  Lines          56       56           
=======================================
  Hits           31       31           
  Misses         25       25           

Flag	Coverage Δ
unittests	55.35% <ø> (ø)

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