Address Shellcheck findings

Current Behavior

Shellcheck findings in the IB pipeline. We cannot fail on shellcheck because the master branch would fail.

Live Example

https://repo1.dso.mil/ironbank-tools/ironbank-pipeline/-/jobs/2994424

Expected Behavior

All shellcheck findings should be mitigated or added to new issue to discuss ignoring if they cannot be mitigated.

Possible Solution

1. Examine the shellcheck findings for the development branch of the IB pipeline.
2. Research and mitigate the shellcheck findings.
3. For each stage that is modified, compare output artifacts and gitlab logs between the development branch and the new branch.
4. Verify the pipeline behavior is not affected by the shellcheck mitigations.