Re lock to specific gridfieldextensions version
Re lock to specific gridfieldextensions version

Maintain the required exact version, it was likely added for a reason.
the @dev suffix is no longer required though.
tractorcow/silverstripe-fluent,tractorcow/silverstripe-fluent,Internetrix/silverstripe-fluent,Internetrix/silverstripe-fluent,Internetrix/silverstripe-fluent