Bump System.Data.SqlClient in /test/Audit.EntityFramework.Core.UnitTest

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>

test/Audit.EntityFramework.Core.UnitTest/Audit.EntityFramework.Core.UnitTest.csproj

@@ -33,7 +33,7 @@
 		<PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="5.0.17" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.Proxies" Version="5.0.17" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="5.0.17" />
-		<PackageReference Include="System.Data.SqlClient" Version="4.8.5" />
+		<PackageReference Include="System.Data.SqlClient" Version="4.8.6" />
 	</ItemGroup>
 
 	<ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">