Persist gitlab maximum artifact size between deployments

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Current Behavior

Right now, our quick fix for the error on display here https://repo1.dsop.io/dsop/contrast-security/ardy-data/ardy-data/-/jobs/354271 is to manually increase the setting in the Admin Area of gitlab for max artifacts size.

Purpose

We will want to have this setting persisted between deployments of gitlab... Or else we'll need to do this manual step every time to avoid spontaneous failures.

Plan

Research what can be set in the helm chart values for gitlab to persist the new max allowed artifacts size value.

Acceptance Criteria

We don't need to manually set the max artifacts size.