Bump Syncfusion.Pdf.Net.Core from 28.1.39 to 28.2.3 in /src (#842)

Author: dependabot[bot]

src/Directory.Packages.props

@@ -12,7 +12,7 @@
     <PackageVersion Include="Syncfusion.DocIO.Net.Core" Version="28.1.39" />
     <PackageVersion Include="Syncfusion.DocIORenderer.Net.Core" Version="28.1.38" />
     <PackageVersion Include="Syncfusion.EJ2.PdfViewer.AspNet.Core.Windows" Version="28.1.37" />
-    <PackageVersion Include="Syncfusion.Pdf.Net.Core" Version="28.1.39" />
+    <PackageVersion Include="Syncfusion.Pdf.Net.Core" Version="28.2.3" />
     <PackageVersion Include="Syncfusion.Presentation.Net.Core" Version="28.1.38" />
     <PackageVersion Include="Syncfusion.PresentationRenderer.Net.Core" Version="28.1.38" />
     <PackageVersion Include="Syncfusion.XlsIO.Net.Core" Version="28.1.38" />