Bump SkiaSharp from 1.68.1 to 1.68.3

Bumps SkiaSharp from 1.68.1 to 1.68.3.

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

Jellyfin.Drawing.Skia/Jellyfin.Drawing.Skia.csproj

@@ -20,7 +20,7 @@
   <ItemGroup>
     <PackageReference Include="BlurHashSharp" Version="1.0.1" />
     <PackageReference Include="BlurHashSharp.SkiaSharp" Version="1.0.0" />
-    <PackageReference Include="SkiaSharp" Version="1.68.1" />
+    <PackageReference Include="SkiaSharp" Version="1.68.3" />
     <PackageReference Include="SkiaSharp.NativeAssets.Linux" Version="1.68.1" />
     <PackageReference Include="Jellyfin.SkiaSharp.NativeAssets.LinuxArm" Version="1.68.1" />
   </ItemGroup>