Bump SixLabors.ImageSharp from 3.1.2 to 3.1.3 in /ZeroLevel.NN

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 3.1.2 to 3.1.3.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](https://github.com/SixLabors/ImageSharp/compare/v3.1.2...v3.1.3)

---
updated-dependencies:
- dependency-name: SixLabors.ImageSharp
  dependency-type: direct:production
...

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ZeroLevel.NN/ZeroLevel.NN.csproj

@@ -37,7 +37,7 @@
   <ItemGroup>
     <PackageReference Include="Aurigma.GraphicsMill.Core.x64" Version="11.5.23" />
     <PackageReference Include="Microsoft.ML.OnnxRuntime.Managed" Version="1.17.0" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.2" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.3" />
     <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="2.1.1" />
   </ItemGroup>