uv run: List available scripts when a script is not specified - #7687

This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.4.18` -> `0.4.20` |

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>

### [`v0.4.20`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0420)

[Compare Source](astral-sh/uv@0.4.19...0.4.20)

##### Enhancements

-   Add managed downloads for CPython 3.13.0 (final) ([#&#8203;8010](astral-sh/uv#8010))
-   Python 3.13 is the default version for `uv python install` ([#&#8203;8010](astral-sh/uv#8010))
-   Hint at wrong endpoint in `uv publish` failures ([#&#8203;7872](astral-sh/uv#7872))
-   List available scripts when a command is not specified for `uv run` ([#&#8203;7687](astral-sh/uv#7687))
-   Fill in `authors` field during `uv init` ([#&#8203;7756](astral-sh/uv#7756))

##### Documentation

-   Add snapshot testing to contribution guide ([#&#8203;7882](astral-sh/uv#7882))
-   Fix and improve GitLab integration docs ([#&#8203;8000](astral-sh/uv#8000))

### [`v0.4.19`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0419)

[Compare Source](astral-sh/uv@0.4.18...0.4.19)

##### Enhancements

-   Add managed downloads for CPython 3.13.0rc3 and 3.12.7 ([#&#8203;7880](astral-sh/uv#7880))
-   Display the target virtual environment path if non-default ([#&#8203;7850](astral-sh/uv#7850))
-   Preserve case-insensitive sorts in `uv add` ([#&#8203;7864](astral-sh/uv#7864))
-   Respect project upper bounds when filtering wheels on `requires-python` ([#&#8203;7904](astral-sh/uv#7904))
-   Add `--script` to `uv run` to treat an input as PEP 723 regardless of extension ([#&#8203;7739](astral-sh/uv#7739))
-   Improve legibility of build failure errors ([#&#8203;7854](astral-sh/uv#7854))
-   Show interpreter source during Python discovery query errors ([#&#8203;7928](astral-sh/uv#7928))

##### Configuration

-   Add `UV_FIND_LINKS` environment variable for `--find-links` ([#&#8203;7912](astral-sh/uv#7912))
-   Ignore empty string values for `UV_PYTHON` environment variable ([#&#8203;7878](astral-sh/uv#7878))

##### Bug fixes

-   Allow `py3x-none` tags in newer than Python 3.x ([#&#8203;7867](astral-sh/uv#7867))
-   Allow self-dependencies in the `dev` section ([#&#8203;7943](astral-sh/uv#7943))
-   Always ignore `cp2` wheels in resolution ([#&#8203;7902](astral-sh/uv#7902))
-   Clear the publish progress bar on retry ([#&#8203;7921](astral-sh/uv#7921))
-   Fix parsing of `gnueabi` libc variants in Python version requests ([#&#8203;7975](astral-sh/uv#7975))
-   Simplify supported environments when comparing to lockfile ([#&#8203;7894](astral-sh/uv#7894))
-   Trim commits when reading from Git refs ([#&#8203;7922](astral-sh/uv#7922))
-   Use a higher HTTP read timeout when publishing packages ([#&#8203;7923](astral-sh/uv#7923))
-   Remove the first empty line for `uv tree --package foo` ([#&#8203;7885](astral-sh/uv#7885))

##### Documentation

-   Add 3.13 support to the platform reference ([#&#8203;7971](astral-sh/uv#7971))
-   Clarify project environment creation ([#&#8203;7941](astral-sh/uv#7941))
-   Fix code block title in Gitlab integration docs ([#&#8203;7861](astral-sh/uv#7861))
-   Fix project guide section on adding a Git dependency ([#&#8203;7916](astral-sh/uv#7916))
-   Fix uninstallation command for Windows ([#&#8203;7944](astral-sh/uv#7944))
-   Clearly specify the minimum supported Windows Server version ([#&#8203;7946](astral-sh/uv#7946))

##### Rust API

-   Remove unused `Sha256Reader` ([#&#8203;7929](astral-sh/uv#7929))
-   Remove unnecessary `Deserialize` derives on settings ([#&#8203;7856](astral-sh/uv#7856))

</details>

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