fix(deps): update dependency attrs to v25.3.0 (#317)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [attrs](https://github.com/python-attrs/attrs) ([changelog](https://www.attrs.org/en/stable/changelog.html)) | project.dependencies | minor | `==25.2.0` -> `==25.3.0` |

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### Release Notes

<details>
<summary>python-attrs/attrs (attrs)</summary>

### [`v25.3.0`](https://github.com/python-attrs/attrs/blob/HEAD/CHANGELOG.md#2530---2025-03-13)

[Compare Source](https://github.com/python-attrs/attrs/compare/25.2.0...25.3.0)

##### Changes

-   Restore support for generator-based `field_transformer`s.
    [#&#8203;1417](https://github.com/python-attrs/attrs/issues/1417)

</details>

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Reviewed-on: https://git.tainton.uk/repos/pypilot/pulls/317
Reviewed-by: Luke Tainton <luke@tainton.uk>
Co-authored-by: Renovate [BOT] <renovate-bot@git.tainton.uk>
Co-committed-by: Renovate [BOT] <renovate-bot@git.tainton.uk>

pyproject.toml

@@ -9,7 +9,7 @@ authors = [
 requires-python = "<4.0,>=3.11"
 dependencies = [
     "astroid==3.3.9",
-    "attrs==25.2.0",
+    "attrs==25.3.0",
     "certifi==2025.1.31",
     "charset-normalizer==3.4.1",
     "click==8.1.8",