[48939] Do not create inconsistent external engagements
2.20.0
-------------------
[46894] Use SD Pydantic settings model in SD-changed-at
2.19.1
-------------------
[45401] AD_sync removes engagement info from users when the AD-account is removed and removes AD engagement info from engagements that are no longer primary
2.19.0
-------------------
[46715] Use poetry for dependency management
2.18.1
-------------------
[48809] Skip connecting it-system during Opus import if multiple entries exist in MO.