Bump ZLinq from 1.5.4 to 1.5.5 (#2917)

Updated [ZLinq](https://github.com/Cysharp/ZLinq) from 1.5.4 to 1.5.5.

<details>
<summary>Release notes</summary>

_Sourced from [ZLinq's
releases](https://github.com/Cysharp/ZLinq/releases)._

## 1.5.5

## What's Changed
* Update GH action benchmark results link by @​SnakyBeaky in
Cysharp/ZLinq#238
* chore(deps): bump actions/upload-artifact from 5.0.0 to 6.0.0 by
@​dependabot[bot] in Cysharp/ZLinq#239
* Fix OverflowException in Average() for int type by using long
accumulator by @​prozolic in Cysharp/ZLinq#240
* Fix double dispose in OrderBy, Shuffle, Shuffle.SkipTake by @​apkd in
Cysharp/ZLinq#241

## New Contributors
* @​SnakyBeaky made their first contribution in
Cysharp/ZLinq#238

**Full Changelog**:
Cysharp/ZLinq@1.5.4...1.5.5

Commits viewable in [compare
view](Cysharp/ZLinq@1.5.4...1.5.5).
</details>

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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

ImperatorToCK3/ImperatorToCK3.csproj

@@ -52,7 +52,7 @@
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
         <PackageReference Include="SixLabors.ImageSharp" Version="3.1.12" />
-        <PackageReference Include="ZLinq" Version="1.5.4" />
+        <PackageReference Include="ZLinq" Version="1.5.5" />
     </ItemGroup>
 
     <ItemGroup>