fix: scanjob.customVolumesMount is not applied to the Built-Job

[takutakahashi]

Description

A value generated by range is pass-by-value and changes will not apply to original array.
Then I used an index to change the array values directly.

Related issues

• Close scanJob.customVolumesMount is not applied to the generated Job #2240

Checklist

• I've read the guidelines for contributing to this repository.
• I've added tests that prove my fix is effective or that my feature works.
• I've updated the documentation with the relevant information (if needed).
• I've added usage information (if the PR introduces new options)
• I've included a "before" and "after" example to the description (if the PR is a user interface change).

[CLAassistant]

All committers have signed the CLA.

[miklezzzz]

cmon, guys, we've got to get it merged

[takutakahashi]

Hello, I desire this PR will get merged!
If some processes is needed, please tell me about I need to do for merge.

[github-actions]

This PR is stale because it has been labeled with inactivity.

[itaysk]

@simar7 @afdesk PTAL

[afdesk]

@takutakahashi thanks for the contribution and sorry for the long wait
It looks good to me!