Enable native brute-force protection

Error on Imunify 360 dashboard: Enable native brute-force protection module for Dovecot to protect against IMAP/POP3 services attacks.
Screenshot: https://prnt.sc/ExqjW1hdfOrR

Solution: Dovecot native brute force protection module improves stability and resolves issues that standard PAM caused in some cases The following commands can be used to control the Dovecot native module.

Enable:

imunify360-agent config update '{"PAM": {"enable":

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