Bump SixLabors.ImageSharp from 2.1.3 to 3.1.1

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp) from 2.1.3 to 3.1.1.
- [Release notes](https://github.com/SixLabors/ImageSharp/releases)
- [Commits](SixLabors/ImageSharp@v2.1.3...v3.1.1)

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

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

Author: dependabot[bot]

Open-MediaServer/Open-MediaServer.csproj

@@ -25,7 +25,7 @@
       <PackageReference Include="Mime-Detective" Version="23.9.1" />
       <PackageReference Include="Mime-Detective.Definitions.Exhaustive" Version="23.9.1" />
       <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-      <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
+      <PackageReference Include="SixLabors.ImageSharp" Version="3.1.1" />
       <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta15" />
       <PackageReference Include="sqlite-net-pcl" Version="1.8.116" />
       <PackageReference Include="SQLiteNetExtensions" Version="2.1.0" />