Jinja toyaml filter weirdness

[lmolkova]

Try this

weaver.yaml

templates:
  - pattern: schema.j2
    filter: .
    application_mode: single
    file_name: next-version-dev/schema.yaml

whitespace_control:
  trim_blocks: true
  lstrip_blocks: true
  keep_trailing_newline: true

template

{{ ctx | toyaml }}

produces something weird (one group for all of them, full output: https://gist.github.com/lmolkova/d1ea914a2b802fcfff08629d03d9dfca)

groups:
- attributes:
  - brief: |
      Uniquely identifies the framework API revision offered by a version (`os.version`) of the android operating system. More information can be found [here](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels).
    examples:
    - \u002733\u0027
    - \u002732\u0027
   ...
  - brief: |
      This attribute represents the state of the application.
    examples:
    - created
    name: android.app.state
  ...
  metric_name: null
  name: null
  span_kind: null
  type: attribute_group
  unit: null
- attributes:
   ...
  metric_name: null
  name: null
  span_kind: null
  type: attribute_group
...

also escaping is wrong

  brief: \u0027Deprecated, use `db.client.connection.create_time` instead. Note: the unit also changed from `ms` to `s`.\u0027

tojson works like a charm. See open-telemetry/semantic-conventions#2469 for the details