Added bandit to the ironbank-pipeline pipeline and mitigated 2 high severity bandit findings.

Description

Issue: https://repo1.dso.mil/ironbank-tools/ironbank-pipeline/-/issues/841

• Bandit has been added to the ironbank-pipeline pipeline.
• It exits with 1 if there are any findings.
  • This causes the job to fail, so the bandit job is set to allow to fail for now while we work on mitigating the findings.
• There were 2 high findings that were mitigated in this MR.
• The bandit job also generates a report artifact.
• The following jobs have been pulled into one stage called "code-check": bandit, format, lint, trufflehog, unit-testing.

Risk

• Setting autoescape=True may cause issues where these scripts are used.

Rollback Plan

• Remove autoescape=True from kickoff.py and notifier.py

Testing

• To run the bandit job locally run the command make run_bandit.

Closes #841