Velero: Drop ALL capabilities

Package Merge Request

Package Changes

Adds Velero securityContext: capabilities: drop: - ALL

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/cluster-utilities/velero/-/merge_requests/57

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/cluster-utilities/velero/-/issues/26