fix: deduplicate errors in pipeline runs

[trueberryless]

Description

This PR fixes duplicated error outputs in GitHub action pipeline runs by removing the core.error(err) call in the catch block, which was probably unintentionally kept in #289 while correctly replacing the other console statements, leading to the error being shown twice (as reported by Chris):

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[trueberryless]

Sorry, I didn't see #724. Closing this as a duplicate 👍