Roll back to 0.2 since APEL has not yet released v 0.4
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This merge request is automatically cherrypicked from !1733 (closed) from source branch https://source.coderefinery.org/nordugrid/arc/-/tree/rollback_apel_version orginally made by @maikenp .
The original MR went to branch: https://source.coderefinery.org/nordugrid/arc/-/tree/master
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APEL has not released 0.4 for production, only for testing, causing publishing to break for many sites. Rolling back until we get the all-clear from APEL.