[MacPorts] #53286: ImageMagick: update to 6.9.7 (was: ImageMagick @6.9.6-6: update to 7.0.4-3 and fix livecheck)

[MacPorts]

#53286: ImageMagick: update to 6.9.7
--------------------------+------------------------
  Reporter:  l2dy         |      Owner:  ryandesign
      Type:  update       |     Status:  accepted
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  ImageMagick  |
--------------------------+------------------------
Changes (by ryandesign):

 * cc: ryandesign (removed)
 * status:  new => accepted
 * owner:   => ryandesign


Comment:

 Updating to version 7 is postponed indefinitely as you found in #51310.

 The livecheck was already fixed in
 [0b1a81c24866e7a24b48e568f95bfd13df2bd3d2/macports-ports] to only find 6.x
 versions.

 Updating to 6.9.6-8 or later is more difficult than you might think,
 because the library versions of all three libraries have changed, which
 means all ports linking with any ImageMagick library need to be revbumped
 to be rebuilt, and ideally I would like to test that they all do build
 correctly before committing that.

--
Ticket URL: <https://trac.macports.org/ticket/53286#comment:3>
MacPorts <https://www.macports.org/>
Ports system for macOS