Bug with relative paths

Providing the `-t` argument with a relative path causes a bug.  e.g.

`-t ..\..\MyProject\Data\Migrations\20250716070321_MyMigration.cs`

Throws

```
Unhandled exception. System.IO.DirectoryNotFoundException: Could not find a part of the path 'E:\RootFolder\MyProject\MyProject\Data\Migrations\20220707182017_MyMigration.cs'.
```