Update step-runner library version to 0.3.0

Axel von Bertoldirequested to merge
avonbertoldi/update-step-runner-version into main

step-runner!169 (merged) made some breaking changes, and because we don't version the dev image, it broke the step-integration tests here.

Also update the echo-step step version not v5 which is required with the step-runner upgrade.

Edited by Axel von Bertoldi

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