## Changes
Allows custom untyped fields in the root config in json-schema so it
doesn't highlight errors when using yaml-anchors.
Example use case:
```
tags: &job-tags
environment: ${bundle.target}
resources:
jobs:
db1:
tags:
<<: *job-tags
db1:
tags:
<<: *job-tags
```
One downside is that we don't highlight any unknown top-level properties
anymore (but they will still fail during CLI validation)
## Tests
Manually checked behavior in VSCode - it doesn't show validation error.
Also checked that other typed properties are still suggested
Ilya Kuznetsov