Bump the python-dependencies group in /src/py with 3 updates

[dependabot]

Bumps the python-dependencies group in /src/py with 3 updates: pytest, sinter and stim.

Updates pytest from 9.0.3 to 9.1.1

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.

9.1.0

pytest 9.1.0 (2026-06-13)

Removals and backward incompatible breaking changes

• #14533: When using --doctest-modules, autouse fixtures with module, package or session scope that are defined inline in Python test modules (not plugins or conftests) will now possibly execute twice.

  If this is undesirable, move the fixture definition to a conftest.py file if possible.

  Technical explanation for those interested: When using --doctest-modules, pytest possibly collects Python modules twice, once as pytest.Module and once as a DoctestModule (depending on the configuration). Due to improvements in pytest's fixture implementation, if e.g. the DoctestModule collects a fixture, it is now visible to it only, and not to the Module. This means that both need to register the fixtures independently.

Deprecations (removal in next major release)

• #10819: Added a deprecation warning for class-scoped fixtures defined as instance methods (without @classmethod). Such fixtures set attributes on a different instance than the test methods use, leading to unexpected behavior. Use @classmethod decorator instead -- by yastcher.

  See 10819 and 14011.

• #12882: Calling request.getfixturevalue() <pytest.FixtureRequest.getfixturevalue> during teardown to request a fixture that was not already requested is now deprecated and will become an error in pytest 10.

  See dynamic-fixture-request-during-teardown for details.

• #13409: Using non-~collections.abc.Collection iterables (such as generators, iterators, or custom iterable objects) for the argvalues parameter in @pytest.mark.parametrize <pytest.mark.parametrize ref> and metafunc.parametrize <pytest.Metafunc.parametrize> is now deprecated.

  These iterables get exhausted after the first iteration, leading to tests getting unexpectedly skipped in cases such as running pytest.main() multiple times, using class-level parametrize decorators, or collecting tests multiple times.

  See parametrize-iterators for details and suggestions.

• #13946: The private config.inicfg attribute is now deprecated. Use config.getini() <pytest.Config.getini> to access configuration values instead.

  See config-inicfg for more details.

• #14004: Passing baseid to ~pytest.FixtureDef or nodeid strings to fixture registration APIs is now deprecated. These are internal pytest APIs that are used by some plugins.

... (truncated)

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

Updates sinter from 1.15.0 to 1.16.0

Updates stim from 1.15.0 to 1.16.0

Release notes

Sourced from stim's releases.

v1.16.0 - Flowing Circuits

Flagship Changes

• Started a new glue library "stimflow" for qec circuit creation
• Added class stim.CliffordString
• Added prebuilt wheels for python 3.13 and python 3.14

Breaking Changes:

• Dropped support for versions of python past their end of life:
  • Python 3.6 (EOL 2021)
  • Python 3.7 (EOL 2023)
  • Python 3.8 (EOL 2024)
  • Python 3.9 (EOL 2025)

Notable Changes:

• stim.PauliString.__init__ now accepts dict[int, int | str] and dict[int | str, Iterable[int]] values
• Added method stim.Circuit.missing_detectors
• Added argument unknown_input=False to method stim.Circuit.count_determined_measurements
• Added method stim.FlipSimulator.append_measurement_flips
• Added pickling support to stim.CompiledMeasurementsToDetectionEventsConverter
• Added support for converting OBSERVABLE_INCLUDE instructions with pauli targets to stimcirq
• Added stim.CliffordString.
• Added sinter.plot_custom
• stim sample now uses loop folding to accelerate the collection of a reference sample from high-repetition-count circuits
  • Added --skip_loop_folding option to stim sample (as loop folding is slower in some cases)
• Added single_measure_key argument to stimcirq.stim_circuit_to_cirq_circuit
• Added basic support for feedback operations to stimcirq
• Added pymatching-correlated as a default supported decoder to sinter

Other Changes:

• Added operator[] to stim::ReferenceSampleTree
• Added more paper data references

Bug Fixes:

• Fixed stim.Circuit.explain_detector_error_model_errors mixing up Y/Z terms of PAULI_CHANNEL_2 errors
• Fixed stim.Circuit.explain_detector_error_model_errors over-counting HERALDED_ERASE measurements
• Fixed sinter not allowing numpy integers to be used as counts
• Fixed stim.Circuit.flow_generators inverting measurement index order within MPP instructions
• Fixed sinter.AnonTaskStats being overly anal about the types of counts it was given
• Fixed sinter postselection failing due to miscalculating an expected quantity

Special thanks to this release's contributors:

• Iftach Yakar (@​DeDuckProject)
• Guen Prawiroatmodjo
• Amanda Xu (@​amandashoe)

... (truncated)

Commits

• e2fc1ec Bump to v1.16.0
• e34cb63 Add stimflow upload step to ci (#1069)
• 8dd4a95 Drop support for end-of-life'd python 3.8 and 3.9 (#1068)
• 9914959 Minor changes to stimflow (#1067)
• 571239f Fixing sinter post-selection feature (#1057)
• e9cc7de Add missing include for GCC 16 (#1064)
• 6db111d Add glue/stimflow directory (#1062)
• 462feea Use b key for moving qubits in crumble (#1061)
• d6a159b Crumble UI touchups (#1052)
• 35b1b81 Use relative indexing when converting to cirq with single_measure_key (#1060)
• Additional commits viewable in compare view

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