chore(deps): update ghcr.io/astral-sh/uv docker tag to v0.7.15

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/astral-sh/uv	final	patch	0.7.14 -> 0.7.15

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Release Notes

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

v0.7.15

Compare Source

Enhancements

• Consistently use Ordering::Relaxed for standalone atomic use cases (#​14190)
• Warn on ambiguous relative paths for --index (#​14152)
• Skip GitHub fast path when rate-limited (#​13033)
• Preserve newlines in schema.json descriptions (#​13693)

Bug fixes

• Add check for using minor version link when creating a venv on Windows (#​14252)
• Strip query parameters when parsing source URL (#​14224)

Documentation

• Add a link to PyPI FAQ to clarify what per-project token is (#​14242)

Preview features

• Allow symlinks in the build backend (#​14212)

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