Allow absolute path for migrationFolder config

[rashadibrahimoff]

For the following configuration

export default defineConfig({
  kysely: kyselyInstance,
  migrations: {
    migrationFolder: path.resolve(__dirname, './path/to/migrations'),
  },
});

Getting the error

Migration failed with Error: ENOENT: no such file or directory, mkdir '/Users/.../project/Users/.../project/path/to/migrations'

Seems like it concatenates cwd with provided path and makes it impossible to pass absolute path.

--

It might be non-intuitive to figure out you need to pass path relative to the directory (cwd) from where you execute the command. Would be easier to follow if one can just pass absolute path.