[MacPorts] #34255: appengine-java-sdk update maintainers

[MacPorts]

#34255: appengine-java-sdk update maintainers
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 Reporter:  nhoj.patrick@…          |       Owner:  macports-tickets@…                   
     Type:  submission              |      Status:  new                                  
 Priority:  Normal                  |   Milestone:                                       
Component:  ports                   |     Version:  2.0.4                                
 Keywords:  haspatch                |        Port:  appengine-java-sdk                   
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 Based upon https://trac.macports.org/ticket/34254#comment:1

 I'm updating the maintainers field to add myself.

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Ticket URL: <https://trac.macports.org/ticket/34255>
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