chore: 更新依赖到 20.2.6

Author: ArgoZhang

src/components/BootstrapBlazor.Html2Pdf/BootstrapBlazor.Html2Pdf.csproj

@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="BootstrapBlazor" Version="$(BBVersion)" />
-    <PackageReference Include="PuppeteerSharp" Version="20.*" />
+    <PackageReference Include="PuppeteerSharp" Version="20.2.6" />
   </ItemGroup>
 
 </Project>