Change dependency from Command to Fluent

Artisan was giving errors on running migrations for renaming DB columns. An incorrect Command dependency was the reason behind the bug. Changed it to the correct Fluent dependency.

Signed-off-by: Dries Vints <dries.vints@gmail.com>
Merge pull request #933 from driesvints/bugfix/fix-incorrect-dependency

Change dependency from Command to Fluent