Update SixLabors.ImageSharp.Web packages to v4

Author: renovate[bot]

Directory.Packages.props

@@ -59,9 +59,9 @@
     <PackageVersion Include="OrchardCore.Translations.All" Version="2.1.0" />
     <PackageVersion Include="PdfPig" Version="0.1.14" />
     <PackageVersion Include="Shortcodes" Version="1.3.6" />
-    <PackageVersion Include="SixLabors.ImageSharp.Web" Version="3.2.0" />
-    <PackageVersion Include="SixLabors.ImageSharp.Web.Providers.Azure" Version="3.2.0" />
-    <PackageVersion Include="SixLabors.ImageSharp.Web.Providers.AWS" Version="3.2.0" />
+    <PackageVersion Include="SixLabors.ImageSharp.Web" Version="4.0.0" />
+    <PackageVersion Include="SixLabors.ImageSharp.Web.Providers.Azure" Version="4.0.0" />
+    <PackageVersion Include="SixLabors.ImageSharp.Web.Providers.AWS" Version="4.0.0" />
     <PackageVersion Include="StackExchange.Redis" Version="2.13.1" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.1.118" />
     <PackageVersion Include="xunit.v3.mtp-v2" Version="3.2.2" />