Remove addtionalProperties in runners schema
What does this MR do?
This resulted into failure on EE pipeline, for more information follow from gitlab-ee!7600 (comment 105310648) onwards.
What are the relevant issue numbers?
Introduced in: gitlab-org/gitlab-ce!21983 gitlab-org/gitlab-ce#51927
Does this MR meet the acceptance criteria?
Changelog entry added, if necessaryDocumentation created/updated-
Tests added for this feature/bug -
Conforms to the code review guidelines -
Conforms to the merge request performance guidelines -
Conforms to the style guides Conforms to the database guides
Closes #52195 (closed)