Update project dependencies

Updating the following dependencies

Sql.Tests

Package Current New
Npgsql 6.0.7 7.0.0
Sequence.Core.TestHarness 0.18.0-a.main.2211102318 0.18.0-a.main.2211141306

Sequence.Connectors.Sql

Package Current New
Npgsql 6.0.7 7.0.0
Sequence.Core 0.18.0-a.main.2211102318 0.18.0-a.main.2211141306