Up pipeline script sleep time

What does this MR do?

Attempt to fix #331946 (closed) by upping sleep time in .gitlab-ci.yml. This will hopefully allow the pipeline to continue to run while the rest of the script executes.

The pipeline should not be finished by the time the script ends up at the MR.

Closes #331946 (closed)

Does this MR meet the acceptance criteria?

Conformity

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• I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.
• This change is backwards compatible across updates, or this does not apply.