Update gems with errors, to prevent 500 errors

##### What does this PR do?

This PR updates the following gems
* gemnasium-gitlab-service
* org-ruby

##### Why is this PR needed?

Updating these gems fixes a 500 error related to gemnasium integration, and a previous 500 error when parsing an org file. Thank you @wallyqs for updating the `org-ruby` gem.

@randx All tests pass locally