Bump soupsieve to 2.8.4

[masa10-f]

Summary

• update soupsieve from 2.8.3 to 2.8.4 in uv.lock
• resolve the Dependabot alerts for GHSA-2wc2-fm75-p42x and GHSA-836r-79rf-4m37

Root cause and impact

soupsieve is pulled in transitively by the documentation dependency chain through Beautiful Soup. Version 2.8.3 is affected by memory-exhaustion and ReDoS vulnerabilities when parsing malicious selectors. The patched version is 2.8.4.

This change only updates the locked package version and artifact hashes; project dependency constraints and application code are unchanged.

Validation

• uv lock --check
• uv run --extra dev pytest -s -m "not pyzx" — 497 passed, 1 skipped
• verified soupsieve.__version__ == "2.8.4" with the doc extra
• uv run --extra doc sphinx-build -W docs/source docs/build

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.62%. Comparing base (cef85df) to head (4cbd2bb).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #228   +/-   ##
=======================================
  Coverage   85.62%   85.62%           
=======================================
  Files          25       25           
  Lines        3674     3674           
  Branches      638      638           
=======================================
  Hits         3146     3146           
  Misses        379      379           
  Partials      149      149           

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