[MacPorts] #27225: Update dovecot to 1.2.16

[MacPorts]

#27225: Update dovecot to 1.2.16
------------------------------+---------------------------------------------
 Reporter:  brad@…            |       Owner:  jberry@…           
     Type:  update            |      Status:  new                
 Priority:  Normal            |   Milestone:                     
Component:  ports             |     Version:                     
 Keywords:  haspatch          |        Port:  dovecot            
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Comment(by jmr@…):

 You can't remove the epoch or the port will never show as outdated.

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Ticket URL: <https://trac.macports.org/ticket/27225#comment:2>
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