[MacPorts] #54045: Update ripgrep to 0.5.1 version

[MacPorts]

#54045: Update ripgrep to 0.5.1 version
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 Reporter:  SuperBo  |      Owner:
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.4.1
 Keywords:           |       Port:  ripgrep
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 Ripgrep current latest version is 0.5.1 which was released on 04-09-2017.
 While the current port version is 0.2.3 which was released in Oct last
 year. This means that it is 7 month from the last update of ripgrep port.

 Please update it to the latest version or pass it to another maintainer.

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Ticket URL: <https://trac.macports.org/ticket/54045>
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