Revert "Bump SixLabors.ImageSharp from 2.1.8 to 2.1.11"

This reverts commit 04e419c.

im never listening to dependabot again

Author: Warp9000

Quaver.API/Quaver.API.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="MonoGame.Extended" Version="1.1.0" />
     <PackageReference Include="MoonSharp" Version="2.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.11" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.8" />
     <PackageReference Include="sqlite-net-pcl" Version="1.5.231" />
     <PackageReference Include="YamlDotNet" Version="5.1.0" />
     <PackageReference Include="z440.atl.core" Version="3.18.0" />