Upgrade docker-compose file versions

In theodolite-benchmarks/docker-test/ for all docker-compose files: Docker-Compose Versioning

• From version: '2'
• To: TBD (at least 2.2 to support scale:x)

changed the description

added To Do modul/benchmarks labels

When we update the version, I would suggest to directly use the latest one. As far as I know, there aren't many breaking changes.

mentioned in merge request !187 (merged)

assigned to @stu203404

If i understood correctly, following: Docker Forum and:

Docker compose v3

Docker compose specification

The newest version 3.9 is used as default if not specified. Therefore i will remove the version specification and will run the smoke tests.

We discussed that it would be better to explicit define the Docker compose version