Call update.install in parallel

Configuration
1

Is there a way to call update.install in parallel for several entities from an automation?

I tried:

  1. Foreach waits for update to be completed, this doesn’t work:
actions:
- repeat:
    for_each: |
      {{ states.update
         | map( attribute='entity_id' )
         | select( 'is_state_attr', 'auto_update', false )
         | select( 'is_state', 'on' )
         | list }}
    sequence:
    - action: update.install
      target:
        entity_id: '{{ repeat.item }}'

An automation with mode: parallel and template trigger as follows also doesn’t work, as it triggers on change from false to true, but it only become false when all devices are updated.

triggers:
- trigger: template
  value_template: |
    {{ states.update
       | map( attribute='entity_id' )
       | select( 'is_state_attr', 'auto_update', false )
       | select( 'is_state', 'on' )
       | list
       | length }}