[MacPorts] #40649: textmate2: update to newer version

[MacPorts]

#40649: textmate2: update to newer version
--------------------------+-----------------------
 Reporter:  ryandesign@…  |      Owner:  cal@…
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.2.0
 Keywords:                |       Port:  textmate2
--------------------------+-----------------------
 The TextMate application displayed a dialog today saying "TextMate is
 Outdated! This version of TextMate is more than 6 weeks old and you should
 update to latest version. You can continue to use this version for another
 44 days."

 {{{
 $ port livecheck textmate2
 textmate2 seems to have been updated (port version: 2.0-alpha.9465, new
 version: 2.0-alpha.9479)
 }}}

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Ticket URL: <https://trac.macports.org/ticket/40649>
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