Bump System.Data.SqlClient in /ADONET/ADONetSamples/ConnectionSamples

Bumps [System.Data.SqlClient](https://github.com/dotnet/corefx) from 4.5.1 to 4.8.5.
- [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]

ADONET/ADONetSamples/ConnectionSamples/ConnectionSamples.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.1.1" />
-    <PackageReference Include="System.Data.SqlClient" Version="4.5.1" />
+    <PackageReference Include="System.Data.SqlClient" Version="4.8.5" />
   </ItemGroup>
 
 </Project>