This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [astral-sh/uv](https://github.com/astral-sh/uv) | patch | `0.4.20` -> `0.4.21` |

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>

### [`v0.4.21`](https://github.com/astral-sh/uv/blob/HEAD/CHANGELOG.md#0421)

[Compare Source](astral-sh/uv@0.4.20...0.4.21)

##### Enhancements

-   Add support for managed installations of free-threaded Python ([#&#8203;8100](astral-sh/uv#8100))
-   Add note about `uvx` to `uv tool run` short help ([#&#8203;7695](astral-sh/uv#7695))
-   Enable HTTP/2 requests ([#&#8203;8049](astral-sh/uv#8049))
-   Support `uv tree --no-dev` ([#&#8203;8109](astral-sh/uv#8109))
-   Support PEP 723 metadata with `uv run -` ([#&#8203;8111](astral-sh/uv#8111))
-   Support `pip install --exact` ([#&#8203;8044](astral-sh/uv#8044))
-   Support `uv export --no-header` ([#&#8203;8096](astral-sh/uv#8096))
-   ADd Python 3.13 images to Docker publish ([#&#8203;8105](astral-sh/uv#8105))
-   Support remote (`https://`) scripts in `uv run` ([#&#8203;6375](astral-sh/uv#6375))
-   Allow comma value-delimited arguments in `uv run --with` ([#&#8203;7909](astral-sh/uv#7909))

##### Configuration

-   Support wildcards in `UV_INSECURE_HOST` ([#&#8203;8052](astral-sh/uv#8052))

##### Performance

-   Use shared index when fetching metadata in lock satisfaction routine ([#&#8203;8147](astral-sh/uv#8147))

##### Bug fixes

-   Add prerelease compatibility check to `uv python` CLI ([#&#8203;8020](astral-sh/uv#8020))
-   Avoid deleting a project environment directory if we cannot tell if a `pyvenv.cfg` file exists ([#&#8203;8012](astral-sh/uv#8012))
-   Avoid excluding valid wheels for exact `requires-python` bounds ([#&#8203;8140](astral-sh/uv#8140))
-   Bump `netrc` crate to latest commit ([#&#8203;8021](astral-sh/uv#8021))
-   Fix `uv python pin 3.13t` failure when parsing version for project requires check ([#&#8203;8056](astral-sh/uv#8056))
-   Fix handling of != intersections in `requires-python` ([#&#8203;7897](astral-sh/uv#7897))
-   Remove the newly created tool environment if sync failed ([#&#8203;8038](astral-sh/uv#8038))
-   Respect dynamic extras in `uv lock` and `uv sync` ([#&#8203;8091](astral-sh/uv#8091))
-   Treat resolver failures as fatal in lockfile validation ([#&#8203;8083](astral-sh/uv#8083))
-   Use `git config --get` for author information for improved backwards compatibility ([#&#8203;8101](astral-sh/uv#8101))
-   Use comma-separated values for `UV_FIND_LINKS` ([#&#8203;8061](astral-sh/uv#8061))
-   Use shared resolver state between add and lock to avoid double Git update ([#&#8203;8146](astral-sh/uv#8146))
-   Make `--relocatable` entrypoints robust to symlinking ([#&#8203;8079](astral-sh/uv#8079))
-   Improve compatibility with VSCode PS1 prompt ([#&#8203;8006](astral-sh/uv#8006))
-   Fix "Stream did not contain valid UTF-8" failures in Windows ([#&#8203;8120](astral-sh/uv#8120))
-   Use `--with-requirements` in `uvx` error hint ([#&#8203;8112](astral-sh/uv#8112))

##### Documentation

-   Include `uvx` installation in Docker examples ([#&#8203;8179](astral-sh/uv#8179))
-   Make the instructions for the Windows standalone installer consistent across README and documentation ([#&#8203;8125](astral-sh/uv#8125))
-   Update pip compatibility guide to note transitive URL dependency support ([#&#8203;8081](astral-sh/uv#8081))
-   Document `--reinstall` with `--exclude-newer` to ensure downgrades ([#&#8203;6721](astral-sh/uv#6721))

</details>

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