[MacPorts] #57327: libgit2 @0.27.4: update to 0.27.5

[MacPorts]

#57327: libgit2 @0.27.4: update to 0.27.5
----------------------+----------------------
  Reporter:  l2dy     |      Owner:  dbevans
      Type:  update   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:  security
      Port:  libgit2  |
----------------------+----------------------

Comment (by chrstphrchvz):

 `libgit2` was updated to 0.27.5 in [https://github.com/macports/macports-
 ports/commit/87ad8b181f8d29d508b0f4969c665814aff3ce0b 87ad8b181f] and has
 since been updated to 0.27.7 (currently latest release). I think this can
 be closed.

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Ticket URL: <https://trac.macports.org/ticket/57327#comment:2>
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