Bump imagesharp dependency in upload sample (#1136)

Author: Shane32

samples/Samples.Upload/Samples.Upload.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.8" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.9" />
   </ItemGroup>
 
   <ItemGroup>