Update ghcr.io/astral-sh/uv Docker tag to v0.7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/astral-sh/uv	stage	minor	0.6 -> 0.7

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Release Notes

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

v0.7

Enhancements

• Improve trace log for retryable errors (#​13228)
• Use "error" instead of "warning" for self-update message (#​13229)
• Error when uv version is used with project-specific flags but no project is found (#​13203)

Bug fixes

• Fix incorrect virtual environment invalidation for pre-release Python versions (#​13234)
• Fix patching of clang in managed Python sysconfig (#​13237)
• Respect --project in uv version (#​13230)

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