!582 update Admin.NET/Admin.NET.Web.Core/Admin.NET.Web.Core.csproj.

Merge pull request !582 from David/N/A

Admin.NET/Admin.NET.Web.Core/Admin.NET.Web.Core.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>net6.0</TargetFramework>
@@ -13,6 +13,7 @@
   <ItemGroup>
     <PackageReference Include="AspNet.Security.OAuth.Weixin" Version="6.0.14" />
     <PackageReference Include="IGeekFan.AspNetCore.Knife4jUI" Version="0.0.13" />
+    <PackageReference Include="System.Security.Cryptography.Pkcs" Version="7.0.1" />
   </ItemGroup>
 
   <ItemGroup>