chore(deps): update ghcr.io/astral-sh/uv docker tag to v0.4.28

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/astral-sh/uv	final	patch	0.4.27 -> 0.4.28
ghcr.io/astral-sh/uv	stage	patch	0.4.27 -> 0.4.28

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Release Notes

astral-sh/uv (ghcr.io/astral-sh/uv)

v0.4.28

Compare Source

Enhancements

• Add support for requesting free-threaded builds via +freethreaded (#​8645)
• Improve trusted publishing error messages (#​8633)
• Remove unneeded return from Maturin project template (#​8604)
• Skip Python interpreter discovery for uv export (#​8638)
• Hint about missing trusted publishing permission (#​8632)

Configuration

• Add environment variable to disable progress output (#​8600)

Bug fixes

• Fork when minimum Python version increases (#​8628)
• Ignore empty groups when validating lock (#​8598)
• Remove duplicate word in error message (#​8589)
• Support cyclic dependencies in uv tree (#​8564)
• Update uv init to imply --package when using --build-backend (#​8593)

Documentation

• Clarify requires-python requirement for dependencies (#​8619)
• Update CLI documentation for --cache-dir (#​8627)

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