chore(deps): update dependency bunit to 2.5.3 (#4265)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [bunit](https://bunit.egilhansen.com/)
([source](https://redirect.github.com/bUnit-dev/bUnit)) | `2.4.2` →
`2.5.3` |
![age](https://developer.mend.io/api/mc/badges/age/nuget/bunit/2.5.3?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/bunit/2.4.2/2.5.3?slim=true)
|

---

### Release Notes

<details>
<summary>bUnit-dev/bUnit (bunit)</summary>

###
[`v2.5.3`](https://redirect.github.com/bUnit-dev/bUnit/blob/HEAD/CHANGELOG.md#253---2026-01-08)

##### Added

- `Render(RenderFragment)` is preferred via the
`OverloadResolutionAttribute`. Reported by
[@&#8203;ScarletKuro](https://redirect.github.com/ScarletKuro) in
[#&#8203;1800](https://redirect.github.com/bUnit-dev/bUnit/issues/1800).
Fixed by [@&#8203;linkdotnet](https://redirect.github.com/linkdotnet).
- `FindByTestId` to `bunit.web.query` to gather elements by a given test
id. By [@&#8203;jimSampica](https://redirect.github.com/jimSampica)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/reactiveui/ReactiveUI).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi43NC41IiwidXBkYXRlZEluVmVyIjoiNDIuNzQuNSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiRGVwZW5kZW5jeSBNYW5hZ2VtZW50Il19-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.Packages.props

@@ -18,7 +18,7 @@
   <ItemGroup>
     <PackageVersion Include="Akavache.Sqlite3" Version="11.5.1" />
     <PackageVersion Include="Akavache.SystemTextJson" Version="11.5.1" />
-    <PackageVersion Include="bunit" Version="2.4.2" />
+    <PackageVersion Include="bunit" Version="2.5.3" />
     <PackageVersion Include="DynamicData" Version="9.4.1" />
     <PackageVersion Include="JetBrains.DotMemoryUnit" Version="3.2.20220510" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />