[MacPorts] #68481: boost182, boost183: provide ports for new versions

[MacPorts]

#68481: boost182, boost183: provide ports for new versions
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  Reporter:  barracuda156  |      Owner:  mascguy
      Type:  update        |     Status:  assigned
  Priority:  Low           |  Milestone:
 Component:  ports         |    Version:  2.8.1
Resolution:                |   Keywords:
      Port:  boost         |
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Comment (by artkiver):

 Regarding the other Portfile I just attached, I tweaked it some more to
 get it working with python312 locally. Admittedly, I think I fudged it and
 the "set selected_python python311" should probably be changed at a
 minimum as well? tbh, I don't really understand why that would be
 hardcoded anyway, but there's a LOT about how MacPorts handles Python
 dependencies which leaves much to be desired.

 Regardless, I thought I would delve into it a little bit more as I noticed
 some issue/PR in upstream's openusd that mentioned needing boost 1.82 and
 Python 3.11 so I thought would try to get a little bit further ahead of
 that with 1.83 and Python 3.12, but the usd MacPort is years behind
 upstream at the moment, and I still can't figure out why the boost
 PortGroup is being used there and defaulting to boost176. I'm a little out
 of my depth, so again my apologies if my contributions aren't of value,
 but I figured maybe they might be useful to others as a reference point
 and better than cluttering up disk space locally if nothing else?

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Ticket URL: <https://trac.macports.org/ticket/68481#comment:9>
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