Bump SixLabors.ImageSharp from 3.1.4 to 3.1.5 in /c#/imagePipeline

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](SixLabors/ImageSharp@v3.1.4...v3.1.5)

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

Signed-off-by: dependabot[bot] <support@github.com>

c#/imagePipeline/tbm.ImagePipeline.csproj

@@ -14,7 +14,7 @@
         <PackageReference Include="Sdcb.PaddleInference.runtime.win64.mkl" Version="2.6.1" />
         <PackageReference Include="Sdcb.PaddleOCR" Version="2.7.0.3" />
         <PackageReference Include="Sdcb.PaddleOCR.Models.Online" Version="2.7.0.1" />
-        <PackageReference Include="SixLabors.ImageSharp" Version="3.1.4" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="3.1.5" />
         <PackageReference Include="System.IO.Hashing" Version="8.0.0" />
         <PackageReference Include="System.Threading.RateLimiting" Version="8.0.0" />
         <PackageReference Include="ThumbHash" Version="2.1.1" />