[MacPorts] #52550: ghc-bootstrap: bump to 7.6.3

[MacPorts]

#52550: ghc-bootstrap: bump to 7.6.3
----------------------------+------------------------
  Reporter:  grimreaper     |      Owner:  neverpanic
      Type:  update         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:  haspatch
      Port:  ghc-bootstrap  |
----------------------------+------------------------
Changes (by mf2k):

 * status:  new => assigned
 * owner:  macports-tickets@… => neverpanic
 * version:  2.3.4 =>


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Ticket URL: <https://trac.macports.org/ticket/52550#comment:2>
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