Bump pytest to 9.0.3, pytest-cov to 6.1.1, hypothesis to 6.131.15

[kirklandsign]

Summary:
Brings executorch's open-source CI test-dependency pins forward:

• pytest: 7.2.0 → 9.0.3
• pytest-cov: 4.1.0 → 6.1.1 (required for pytest 9.x compatibility;
  pytest-cov 4.x predates pytest 8/9 support)
• hypothesis: 6.84.2 → 6.131.15

`requirements-ci.txt` is the pinned dependency set used by the CI Docker
images. The previous pins predated pytest 8 and 9 entirely; bumping in
one go avoids stacking incompatible Dependabot PRs.

Also drops the `pytest<9.0` upper bound in `requirements-dev.txt`. That
cap pre-dated pytest 8/9 support and now actively conflicts with the CI
pin — without lifting it, contributors hit pip resolver errors when
trying to reproduce CI failures locally.

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overriding_review_checks_triggers_an_audit_and_retroactive_review
Oncall Short Name: ai_infra_mobile_platform

Differential Revision: D102679505

[pytorch-bot]

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❗ 1 Active SEVs

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• Rolling out OSDC (ARC) runners on pull & trunk workflows in PyTorch main

❌ 5 New Failures

As of commit 6566850 with merge base cb4e5ae ():

NEW FAILURES - The following jobs have failed:

• Cadence Build & Test / cpu-test / test-aot / test-aot (gh)
  backends/cadence/aot/tests/test_replace_ops_passes.py::TestReplaceOpsPasses::test_replace_transposed_conv_with_linear_4
• pull / unittest / linux / linux-job (gh)
  backends/xnnpack/test/recipes/test_xnnpack_recipes.py::TestXnnpackRecipes::test_int8_static_quant_recipe
• pull / unittest / macos / macos-job (gh)
  backends/xnnpack/test/recipes/test_xnnpack_recipes.py::TestXnnpackRecipes::test_int8_static_quant_recipe
• pull / unittest-editable / linux / linux-job (gh)
  backends/xnnpack/test/recipes/test_xnnpack_recipes.py::TestXnnpackRecipes::test_int8_static_quant_recipe
• pull / unittest-editable / macos / macos-job (gh)
  backends/xnnpack/test/recipes/test_xnnpack_recipes.py::TestXnnpackRecipes::test_int8_static_quant_recipe

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[meta-codesync]

@kirklandsign has exported this pull request. If you are a Meta employee, you can view the originating Diff in D102679505.

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[Copilot]

Pull request overview

Updates ExecuTorch’s pinned Python test dependencies used by the CI Docker images to newer, mutually-compatible versions (pytest 9.x + matching pytest-cov, plus a newer Hypothesis) to modernize OSS CI and avoid stacking incompatible bumps.

Changes:

• Bump pytest from 7.2.0 to 9.0.3
• Bump pytest-cov from 4.1.0 to 6.1.1 (to match newer pytest)
• Bump hypothesis from 6.84.2 to 6.131.15

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[Copilot]

After bumping CI to pytest 9.x, the repo’s development requirements are now inconsistent: requirements-dev.txt still caps pytest<9.0. This makes it harder to reproduce CI failures locally and can lead to dependency resolver conflicts for contributors. Consider updating/removing that cap in the same PR (or explicitly linking a landed follow-up) so dev and CI environments stay aligned.