Update composer.json

[DorsetDevStudio]

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service[bot]]

❌ Author of the following commits did not sign a Contributor Agreement: 6beb5489857d4857857ef5697a8f0a623bcca5b3

Please, read and sign the above mentioned agreement if you want to contribute to this project