Update dependency SixLabors.ImageSharp to v4

Author: renovate[bot]

EliteAPI/EliteAPI.csproj

@@ -52,7 +52,7 @@
             <IncludeAssets>compile; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
         <PackageReference Include="Scalar.AspNetCore" Version="2.13.1" />
-        <PackageReference Include="SixLabors.ImageSharp" Version="3.1.12" />
+        <PackageReference Include="SixLabors.ImageSharp" Version="4.0.0" />
         <PackageReference Include="SkyblockRepo" Version="0.4.3" />
         <PackageReference Include="Sqids" Version="3.2.1" />
         <PackageReference Include="StackExchange.Redis" Version="2.11.8" />