deps: update dependency pyfakefs to v6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
pyfakefs (changelog)	>=5,<6 → >=6,<7
pyfakefs (changelog)	>=5.7.4, <6.0.0 → >=6.0.0, <6.1.0

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Release Notes

pytest-dev/pyfakefs (pyfakefs)

v6.0.0

Compare Source

Removes some deprecated functionality, removes support for Python < 3.10.

Breaking Changes

• removed support for Python versions < 3.10; patch releases based on pyfakefs 5.10
  supporting older versions may be made on demand
• removed support for patching legacy modules scandir and pathlib2
• changed the default for FakeFilesystem.shuffle_listdir_results to True to reflect
  the real filesystem behavior

Changes

• added some support for Python 3.15a3

Fixes

• fixes a problem with Path type hints using the pipe symbol in wrapped functions
  inside an fs dependent fixture (see #​1242)
• fixes problem with new coverage in Python 3.14 using the fake filesystem
  (see #​1245)

Documentation

• added project information to documentation pages

Infrastructure

• added CI tests for Python 3.15

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.90%. Comparing base (2b1a0dc) to head (e452f80).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #147   +/-   ##
=======================================
  Coverage   95.90%   95.90%           
=======================================
  Files          90       90           
  Lines        3051     3051           
=======================================
  Hits         2926     2926           
  Misses        125      125           

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