Some helm charts are now published with values.schema.json - a json schema to validate the provided values - case in point, the opentelemetry-collector chart that @RLazarus was trying to import in our repository.
Given this chart has "additionalProperties": false, our CI adding the listeners proxy fixture to tests for every chart/deployment generates an error.
I would suggest that for now we can look if there is a .no-global-fixtures file and don't inject the global fixtures.