[PR Testing] Test only updated repository in PR

[UncleSamSwiss]

Currently the workflow checkRepositoryFiles.yml runs on every PR for up to 40 minutes (in addition to a schedule).

Inside a PR, it would make sense to only run the tests related to the adapter(s) modified with the given PR.

[mcm1957]

Feel free to provide a PR detecting all changed adapter entries.
Please ensure that also invalid changes (like characters added or removed on error) must ensure that the test is failing.