chore(deps): update dependency pytest-runner to v6

This MR contains the following updates:

Package	Change	Age	Confidence
pytest-runner	>=4.0,<5dev -> >=6,<7

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Release Notes

pytest-dev/pytest-runner (pytest-runner)

v6.0.1

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• Updated Trove classifier to indicate this project is inactive.

v6.0.0

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• #​49: Dropped workaround for older setuptools versions.
• Require Python 3.7.

v5.3.2

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• #​58: Fixed syntax issue in changelog.

v5.3.1

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• Refreshed package metadata.

v5.3.0

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• Require Python 3.6 or later.
• Refreshed package metadata.

v5.2

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• #​50: This project is deprecated.

v5.1

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• #​49: Surgically restore support for older setuptools versions.

v5.0

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• #​42: Prefer pyproject.toml

• Refresh package metadata.

• This release now intentionally introduces the changes unintionally brought about in 4.5 and 4.3, where the adoption of declarative config adds a new requirement on setuptools 30.4 or later. On systems running older setuptools, installation of pytest-runner via easy_install (or setup_requires), will result in a DistributionNotFound exception.

  All projects should pin to pytest-runner < 5 or upgrade the environment to setuptools >= 30.4 (prior to invoking setup.py).

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setup.py

@@ -5,7 +5,7 @@ import sys
 from setuptools import setup
 
 needs_pytest = {"pytest", "test", "ptr"}.intersection(sys.argv)
-pytest_runner = ["pytest-runner >=4.0,<5dev"] if needs_pytest else []
+pytest_runner = ["pytest-runner >=6,<7"] if needs_pytest else []
 
 
 def read(fname):