Explicitly require licensee/license file in order to use
Licensee::InvalidLicense class defined in
https://github.com/licensee/licensee/blob/v9.14.1/lib/licensee/license.rb#L6

The problem is that nested classes are not automatically preloaded
which may lead to uninitialized constant exception being raised:
https://gitlab.com/gitlab-org/gitlab/-/issues/356658

The exception is usually raised in dev environment causing
inconvenience

Changelog: fixed