Bump SixLabors.ImageSharp from 3.1.5 to 3.1.6

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 3.1.5 to 3.1.6.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](SixLabors/ImageSharp@v3.1.5...v3.1.6)

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

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

Author: dependabot[bot]

Fritz.ObsProxy/Fritz.ObsProxy.csproj

@@ -10,7 +10,7 @@
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="9.0.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="9.0.0" />
     <PackageReference Include="obs-websocket-dotnet" Version="5.0.0.3" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.5" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.6" />
   </ItemGroup>
 
   <ItemGroup>