Bump SixLabors.ImageSharp from 2.1.6 to 2.1.7 (#1982)

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 2.1.6 to 2.1.7.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](SixLabors/ImageSharp@v2.1.6...v2.1.7)

---
updated-dependencies:
- dependency-name: SixLabors.ImageSharp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

examples/CSharp/Direct3D11 Tutorials/Tutorial 1.3 - Textures/Tutorial 1.3 - Textures.csproj

@@ -11,7 +11,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.6" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="2.1.7" />
     </ItemGroup>
 
     <ItemGroup>