build(deps): update pytest requirement from >=6.0.0 to >=9.1.1

[dependabot]

Updates the requirements on pytest to permit the latest version.

Release notes

Sourced from pytest's releases.

9.1.1

pytest 9.1.1 (2026-06-19)

Bug fixes

• #14220: Fixed a logic bug in pytest.RaisesGroup which would might cause it to display incorrect "It matches FooError() which was paired with BarError" messages.
• #14591: Fixed a regression in pytest 9.1.0 which caused overriding a parametrized fixture with an indirect @​pytest.mark.parametrize to fail with "duplicate parametrization of '<fixture name>'".
• #14606: Fixed list-item typing errors from mypy in @pytest.mark.parametrize <pytest.mark.parametrize ref> argvalues parameter.
• #14608: Fixed a regression in pytest 9.1.0 where conftest.py files located in <invocation dir>/test* were no longer loaded as initial conftests when invoked without arguments. This could cause certain hooks (like pytest_addoption) in these files to not fire.

Commits

• cf470ec Prepare release version 9.1.1
• e0c8ce6 Merge pull request #14625 from pytest-dev/patchback/backports/9.1.x/a07c31a97...
• 1b82d16 Merge pull request #14624 from pytest-dev/patchback/backports/9.1.x/b375b79ec...
• 501c4bc Merge pull request #14596 from bluetech/doc-classmethod
• b61f588 Merge pull request #14622 from chrisburr/fix-14608-initial-conftest-test-subdir
• 9a567e0 [automated] Update plugin list (#14617) (#14618)
• ef8b299 Merge pull request #14620 from pytest-dev/patchback/backports/9.1.x/680f9f3ed...
• 66abd07 Merge pull request #14220 from bysiber/fix-stale-iexp-raisesgroup
• 79fbf93 Merge pull request #14612 from pytest-dev/patchback/backports/9.1.x/974ed48b6...
• 0d312eb Merge pull request #14611 from bluetech/parametrize-argvalues-typing
• Additional commits viewable in compare view

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[cursor]

pytest floor breaks tox

High Severity

Setting pytest>=9.1.0 in requirements-testing.txt cannot be satisfied together with existing tox.ini dependency lines that still cap pytest below 7, 8, or 8.2 for several environments. Pytest 9.1 also requires Python 3.10+, while tox still installs this requirements file for Python 3.8 and 3.9 jobs, so those envs fail at install time.

 

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[github-actions]

Codecov Results 📊

✅ 62846 passed | ⏭️ 3307 skipped | Total: 66153 | Pass Rate: 95% | Execution Time: 233m 37s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -31371
Passed Tests	📉 -28542
Failed Tests	—
Skipped Tests	📉 -2829

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 3000 uncovered lines.
❌ Project coverage is 87.37%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    89.86%    87.37%    -2.49%
==========================================
  Files          192       192         —
  Lines        23758     23758         —
  Branches      8204      8204         —
==========================================
+ Hits         21349     20758      -591
- Misses        2409      3000      +591
- Partials      1344      1378       +34

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