Renovate: Upgrade Twistlock Package Dependencies

• Sync upstream helm chart version with updated dependencies.
• Update defender image in Big Bang synker file

Ignored or Blocked

These are blocked by an existing closed MR and will not be recreated unless you click a checkbox below.

• Update Twistlock Docker tags to v21.08.520 (ironbank/twistlock/console/console, ironbank/twistlock/defender/defender, registry1.dso.mil/ironbank/twistlock/console/console)