Bump System.Data.SqlClient from 4.8.5 to 4.8.6 in /Vsix

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

Vsix/Vsix.csproj

@@ -67,7 +67,7 @@
       <Version>4.5.0</Version>
     </PackageReference>
     <PackageReference Include="System.Data.SqlClient">
-      <Version>4.8.5</Version>
+      <Version>4.8.6</Version>
     </PackageReference>
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
   </ItemGroup>