Update Twistlock to 21.08.520

Package Owner Merge Request

Package Changes

https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/twistlock/-/merge_requests/38

https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/twistlock/-/releases/0.0.10-bb.0

Closes https://repo1.dso.mil/platform-one/big-bang/apps/security-tools/twistlock/-/issues/20