[MacPorts] #54283: sphinx: 1.6.x declare new port sphinxcontrib-websupport as a dependency

[MacPorts]

#54283: sphinx: 1.6.x declare new port sphinxcontrib-websupport as a dependency
----------------------+-----------------------
 Reporter:  lockhart  |      Owner:
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:  haspatch  |       Port:  py-sphinx
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 The Sphinx document creation suite now requires sphinxcontrib-websupport
 to run as of version 1.6.0.
 This patch declares this new port #54280 as a dependency and bumps the
 revision number.
 "sphinx-build --version" now runs successfully.

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Ticket URL: <https://trac.macports.org/ticket/54283>
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