chore(deps): update dependency pytest-mock to v3.15.1

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This PR contains the following updates:

Package	Change	Age	Confidence
pytest-mock (changelog)	3.14.1 -> 3.15.1

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Release Notes

pytest-dev/pytest-mock (pytest-mock)

v3.15.1

Compare Source

2025-09-16

• #&#8203;529 <https://github.com/pytest-dev/pytest-mock/issues/529>_: Fixed itertools._tee object has no attribute error -- now duplicate_iterators=True must be passed to mocker.spy to duplicate iterators.

v3.15.0

Compare Source

2025-09-04

• Python 3.8 (EOL) is no longer supported.
• #&#8203;524 <https://github.com/pytest-dev/pytest-mock/pull/524>_: Added spy_return_iter to mocker.spy, which contains a duplicate of the return value of the spied method if it is an Iterator.

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