Update plugin versions to remove vulnerabilities

[navimon]

Need to update Helm diff, Helm GCS and SOPS plugin to remove vulnerabilities.
Currently:

1. SOPS version v3.10.2 can be used.
2. HELM_DIFF version v3.12.4 can be used
3. Have raised request on HELM GCS repo to cut latest tag: Create latest release hayorov/helm-gcs#224