Bump SixLabors.ImageSharp from 3.1.10 to 3.1.11 (#2669)

Updated [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp)
from 3.1.10 to 3.1.11.

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

_Sourced from [SixLabors.ImageSharp's
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## 3.1.11

## What's Changed
* Backport V3 - GIF: Check for end of stream when reading comments. by
@​JimBobSquarePants in SixLabors/ImageSharp#2955


**Full Changelog**:
SixLabors/ImageSharp@v3.1.10...v3.1.11

Commits viewable in [compare
view](SixLabors/ImageSharp@v3.1.10...v3.1.11).
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ImperatorToCK3/ImperatorToCK3.csproj

@@ -51,7 +51,7 @@
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="SixLabors.ImageSharp" Version="3.1.10" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="3.1.11" />
         <PackageReference Include="ZLinq" Version="1.5.2" />
     </ItemGroup>