Add scans_for_new_key test to CI

[arya2]

Motivation

In PR #8222, an acceptance test was added for registering new keys in zebra-scan while it's running. The test relies on a cached state and may be long running, so it's ignored by default.

It should be added to CI to run for every PR.

Possible Design

• Add the test to CI, see changes in .github/workflows/continous-integration-docker.patch.yml and .github/workflows/continous-integration-docker.yml for adding the test to CI.