This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.8.14` -> `0.8.15` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

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### Release Notes

<details>
<summary>astral-sh/uv (astral-sh/uv)</summary>

### [`v0.8.15`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0815)

[Compare Source](astral-sh/uv@0.8.14...0.8.15)

##### Python

- Upgrade SQLite 3.50.4 in CPython builds for [CVE-2025-6965](GHSA-2m69-gcr7-jv3q) (see also [python/cpython#137134](python/cpython#137134))

##### Enhancements

- Add `uv auth` commands for credential management ([#&#8203;15570](astral-sh/uv#15570))
- Add pyx support to `uv auth` commands ([#&#8203;15636](astral-sh/uv#15636))
- Add `uv tree --show-sizes` to show package sizes ([#&#8203;15531](astral-sh/uv#15531))
- Add `--python-platform riscv64-unknown-linux` ([#&#8203;15630](astral-sh/uv#15630))
- Add `--python-platform` to `uv run` and `uv tool` ([#&#8203;15515](astral-sh/uv#15515))
- Add `uv publish --dry-run` ([#&#8203;15638](astral-sh/uv#15638))
- Add zstandard support for wheels ([#&#8203;15645](astral-sh/uv#15645))
- Allow registries to pre-provide core metadata ([#&#8203;15644](astral-sh/uv#15644))
- Retry streaming Python and binary download errors ([#&#8203;15567](astral-sh/uv#15567))

##### Bug fixes

- Fix settings rendering for `extra-build-dependencies` ([#&#8203;15622](astral-sh/uv#15622))
- Skip non-existent directories in bytecode compilation ([#&#8203;15608](astral-sh/uv#15608))

##### Error messages

- Add error trace to invalid package format ([#&#8203;15626](astral-sh/uv#15626))

</details>

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