Fix the pipeline being blocked by development release

What does this MR do?

Fixes the pipeline by making it not blocked by the release development job.

Why was this MR needed?

This job was meant to be optional. And it was before we've migrated from only/except to rules.

For some reason the allow_failure: true is needed for the manual jobs configured with rules, if we don't want it to block the pipeline.

This MR will restore the old behavior.

What's the best way to test this MR?

What are the relevant issue numbers?