Bump System.Data.SqlClient in /samples/features/json/Dapper-Orm

Bumps [System.Data.SqlClient](https://github.com/dotnet/corefx) from 4.3.0 to 4.8.6.
- [Release notes](https://github.com/dotnet/corefx/releases)
- [Commits](https://github.com/dotnet/corefx/commits)

---
updated-dependencies:
- dependency-name: System.Data.SqlClient
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

samples/features/json/Dapper-Orm/Dapper-Orm.csproj

@@ -30,7 +30,7 @@
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="1.0.2" />
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.0.2" />
     <PackageReference Include="System.Data.Common" Version="4.3.0" />
-    <PackageReference Include="System.Data.SqlClient" Version="4.3.0" />
+    <PackageReference Include="System.Data.SqlClient" Version="4.8.6" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">