update dependency -> SixLabors.ImageSharp v3.1.7

Author: friflo

Engine/src/apps/OpenGL/Engine.OpenGL.csproj

@@ -24,7 +24,7 @@
 
   <ItemGroup>
     <PackageReference Include="Silk.NET.OpenGL" Version="2.21.0" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.5" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.7" />
   </ItemGroup>
 
   <ItemGroup>