Update ghcr.io/astral-sh/uv Docker tag to v0.8.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/astral-sh/uv	final	patch	0.8.2 -> 0.8.3

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Release Notes

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

v0.8.3

Compare Source

Python

• Add CPython 3.14.0rc1

See the python-build-standalone release notes for more details.

Enhancements

• Allow non-standard entrypoint names in uv_build (#​14867)
• Publish riscv64 wheels to PyPI (#​14852)

Bug fixes

• Avoid writing redacted credentials to tool receipt (#​14855)
• Respect --with versions over base environment versions (#​14863)
• Respect credentials from all defined indexes (#​14858)
• Fix missed stabilization of removal of registry entry during Python uninstall (#​14859)
• Improve concurrency safety of Python downloads into cache (#​14846)

Documentation

• Fix typos in uv_build reference documentation (#​14853)
• Move the "Cargo" install method further down in docs (#​14842)

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