remove name keys and their values and attributes if they're duplicated.

[tony-austin]

I have an example file which is used for terraform.
`environmentName: sandbox
groups:

• name: work/sbx1
  variables:
  • name: foo
    value: 123
    type: int
  • name: bar
    value: "hello"
    type: string
  • name: foo
    value: 456
    type: int
• name: work/sbx2
  variables:
  • name: boo
    value: 789
    type: int
  • name: far
    value: "hello"
    type: string
  • name: boo
    value: 789
    type: int`

I'm using v4.45.1

I have tried various options which have thrown errors.
yq eval '.groups[].variables |= uniqueBy(.value)' example_grp_prj_var.yaml Error: 1:30: invalid input text "By(.value)"

yq eval '.groups[] |= (.variables |= uniqueBy(.value))' example_grp_prj_var.yaml Error: 1:35: invalid input text "By(.value))"

yq eval ".groups[] |= (.variables |= reduce .[] as \$item ({}; .[\$item.value] = \$item) | values)" example_grp_prj_var.yaml Error: 1:29: invalid input text "reduce .[] as $i..."

In the above example would like to see end result as:
`environmentName: sandbox
groups:

• name: work/sbx1
  variables:
  • name: foo
    value: 123
    type: int
  • name: bar
    value: "hello"
    type: string
  • name: foo
    value: 456
    type: int
• name: work/sbx2
  variables:
  • name: boo
    value: 789
    type: int
  • name: far
    value: "hello"
    type: string`

Your help would be appreciated.