Update to @gitterhq/services 1.25.0 for repl.it service

Update to @gitterhq/services 1.25.0 for repl.it service

• https://gitlab.com/gitlab-org/gitter/services/merge_requests/104
• gitter-webhooks-handler MR:
  • https://gitlab.com/gitlab-org/gitter/gitter-webhooks-handler/merge_requests/38
  • https://gitlab.com/gitlab-org/gitter/gitter-webhooks-handler/pipelines/73757761

@gitterhq/services update instructions. Soon to be moved in https://gitlab.com/gitlab-org/gitter/webapp/merge_requests/1538

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cc @kgashok