How to select entries with sso_team_id using jq

Goal

How to choose only records that have sso_team_id key defined?

Input file to process with jq and yq.

identities:
  team1:
    oidc: oidc
    type: external
    metadata:
      version: 1
      description: cloud team
    policies:
      - aaa-admin
    sso_team_id: VLT-TEAM_1

  team2:
    oidc: oidc
    type: external
    metadata:
      version: 1
      description: cloud team
    policies:
      - aaa-admin

  team3:
    oidc: oidc
    type: external
    metadata:
      version: 1
      description: cloud team
    policies:
      - aaa-admin
    sso_team_id: VLT-TEAM_3

Processing

yq -o=json eval /tmp/aaa.yaml | jq '.identities | [keys[] as $k | {($k): .[$k].sso_team_id}]  | add | with_entries(select(.value |.!=null))'

{
  "team1": "VLT-TEAM_1",
  "team3": "VLT-TEAM_3"
}

Links:

202406051206