Add pytest-timeout to dev dependencies

[chrislyonsKY]

Summary

• Add pytest-timeout>=2.2 to the dev optional dependency group in pyproject.toml
• The integration CI job uses --timeout=120 which requires the pytest-timeout package, but it was missing from the dev dependencies, causing the job to fail with unrecognized arguments: --timeout=120

Test plan

• Verify the integration CI job (pytest tests/ -m "integration" -v --timeout=120) no longer fails with an unrecognized argument error
• Verify pip install -e ".[dev]" installs pytest-timeout

https://claude.ai/code/session_017fVjWc5uFANtp2AkWmcDox

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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[codecov-commenter]

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✅ All modified and coverable lines are covered by tests.

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