Updated pytest to 9.1.1 for python >=3.10

[pkthong]

What does this Pull Request accomplish?

pytest 8.3.0 has a security vulnerability. Upgrading to 9.1.1 where possible. Security exceptions still exist until we can drop python 3.9.

[ni-github-admins]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (0)
✅	Code Security	0	0	0	0	0 issues

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[Copilot]

🟡 Changes recommended

The Python <3.10 pytest constraint remains broad enough to permit resolving to the vulnerable version mentioned in the PR description on a future lock refresh.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Updates the project’s test dependency constraints to use newer pytest on Python ≥3.10 while maintaining compatibility for Python 3.9, and refreshes the Poetry lockfile accordingly.

Changes:

• Split pytest dependency constraints by Python version (3.9 vs ≥3.10).
• Regenerated poetry.lock to include pytest 9.1.1 for ≥3.10 and updated related resolved dependencies/markers.

File summaries

File	Description
pyproject.toml	Splits pytest constraints by Python version to allow newer pytest on ≥3.10.
poetry.lock	Refreshes locked dependency graph to reflect the updated pytest constraints and related marker changes.

Review details

• Files reviewed: 1/2 changed files
• Comments generated: 1
• Review effort level: Lite

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