Chore(deps): Update pyproject-fmt requirement from <2.6 to <2.9

[dependabot]

Updates the requirements on pyproject-fmt to permit the latest version.

Release notes

Sourced from pyproject-fmt's releases.

pyproject-fmt/2.8.0

• Fix parsing of version pre labels by @​adamchainz in #$89

Commits

• d59bf94 Release pyproject-fmt 2.8.0
• e417995 Fix parsing of version pre labels (#89)
• 063ba33 [pre-commit.ci] pre-commit autoupdate (#87)
• fd85c41 Bump astral-sh/setup-uv from 6 to 7 in the github-actions group (#93)
• ad9f49f Default Python support is now 3.10 to 3.14 (#94)
• 1fb3d6d Release tox-toml-fmt 1.1.0
• 7ed6970 Release pyproject-fmt 2.7.0
• 629dc91 Macos 26 is not yet ready for wide usage (#86)
• 48bde65 Replace upstream pep508 that's deprecated with our own (#84)
• 68f1aa9 Fix empty lines placed within a sorted table (#63)
• Additional commits viewable in compare view

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.88%. Comparing base (87d9b60) to head (9e4f6a5).
⚠️ Report is 16 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #154   +/-   ##
=======================================
  Coverage   94.88%   94.88%           
=======================================
  Files          10       10           
  Lines         586      586           
=======================================
  Hits          556      556           
  Misses         30       30           

Flag	Coverage Δ
unittests	94.88% <ø> (ø)

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[dependabot]

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