Update Core and Reductech dependencies

Updating the following dependencies

Reductech.Sequence.Connectors.FileSystem

Package Current New
Reductech.Sequence.Core 0.18.0-a.main.2211011008 0.18.0-a.main.2211070211

FileSystem.Tests

Package Current New
Reductech.Sequence.Core.TestHarness 0.18.0-a.main.2211011008 0.18.0-a.main.2211070211