[Feat]: Add weekly job to check security issues in NiFi GHCR docker images

[dmitry618]

Summary

Add workflow to check GHCR docker images for open security issues into following repositories:

1. https://github.com/Netcracker/qubership-nifi -- image -- ghcr.io/netcracker/qubership-nifi:latest
2. https://github.com/Netcracker/qubership-nifi-registry -- image -- ghcr.io/netcracker/qubership-nifi-registry:latest

Problem / Motivation

To have latest security reports on all docker images.

Risks / Considerations

N/A

[nookyo]

Resolved.