Bump SixLabors.ImageSharp

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 2.1.3 to 2.1.9.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](SixLabors/ImageSharp@v2.1.3...v2.1.9)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

c_sharp/OpenVINO_EP/yolov3_object_detection/yolov3_object_detection.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.ML.OnnxRuntime.Managed" Version="1.16.0" />
     <PackageReference Include="SixLabors.Core" Version="1.0.0-beta0008" />
     <PackageReference Include="SixLabors.Fonts" Version="1.0.0-beta19" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.9" />
     <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta15" />
   </ItemGroup>