fix jenkins dependency pinning issue

[danistrebel]

Description

What's changed, or what was fixed?

• remove hardcoded plugin versions for script-security by determining it from the downstream modules.

Fixes: #issue

Housekeeping

(please check all that apply [x], do not edit the text)

• [x] I have run all the tests locally and they all pass.
• [x] I have followed the relevant style guide for my changes.
• [ ] PR requires full pipeline run (Run for changes only by default).

CC: @apigee-devrel-reviewers

[danistrebel]

/gcbrun

[apigee-devrel-bot]

Pipeline Report

Pipeline	Result	Elapsed Wall Time
references/cicd-pipeline	pass	570s
TOTAL PIPELINE	pass	570s

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Commit version: 9afbd0f

[danistrebel]

/gcbrun

[apigee-devrel-bot]

Pipeline Report

Pipeline	Result	Elapsed Wall Time
references/cicd-pipeline	pass	551s
TOTAL PIPELINE	pass	551s

View details in Cloud Build (permission required)

Commit version: 1124790