Yaml anchor insertion is not correctly recognised, and falls back to error in default branch

[MetalArend]

Description

YAML anchors are not correctly recognised, so they end up in the default statement, and error out.

Version

3.41.0

Operating system

Ubuntu

Experiments Enabled

No response

Example Taskfile

version: '3'


tasks:
  foo:
    vars: &anchor
      FOO: true
  bar:
    vars:
      <<: *anchor
      BAR: true

[MetalArend]

There seems to be a difference when adding vars: *anchor as a oneliner, and using <<: *anchor next to other vars. The latter is triggering the error.