doc: guide towards x509.fingerprint256
Recommend using x509.fingerprint256 instead of x509.fingerprint and x509.fingerprint512 and suggest using it instead of x509.serialNumber in order to uniquely identify certificates.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Recommend using x509.fingerprint256 instead of x509.fingerprint and x509.fingerprint512 and suggest using it instead of x509.serialNumber in order to uniquely identify certificates.