Bump Microsoft.Data.SqlClient from 3.0.1 to 3.1.5 in /TestSupport

Bumps [Microsoft.Data.SqlClient](https://github.com/dotnet/sqlclient) from 3.0.1 to 3.1.5.
- [Release notes](https://github.com/dotnet/sqlclient/releases)
- [Changelog](https://github.com/dotnet/SqlClient/blob/main/CHANGELOG.md)
- [Commits](dotnet/SqlClient@v3.0.1...v3.1.5)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

TestSupport/TestSupport.csproj

@@ -51,7 +51,7 @@
 		<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="6.0.0" />
-		<PackageReference Include="Microsoft.Data.SqlClient" Version="3.0.1" />
+		<PackageReference Include="Microsoft.Data.SqlClient" Version="3.1.5" />
 		<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.0" />
 		<PackageReference Include="Respawn" Version="4.0.0" />
 		<PackageReference Include="xunit.assert" Version="2.4.2" />