[MacPorts] #59854: py-gobject3: update to 3.34.0

[MacPorts]

#59854: py-gobject3: update to 3.34.0
------------------------+-------------------------
 Reporter:  reneeotten  |      Owner:  dbevans
     Type:  update      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  py-gobject3
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 There is a newer version available for {{{py-gobject3}}}:

 {{{
 > port livecheck py-gobject3
 py-gobject3 seems to have been updated (port version: 3.28.3, new version:
 3.34.0)
 }}}

 additionally, there is no {{{py38}}} subport yet - which is a dependency
 for {{{py-matplotlib}}}.

 Question for the maintainer: have you attempted updating or is there a
 reason for not doing so (I notice there are quite some dependents and
 perhaps it's not possible)? Alternatively, could we just add a {{{py38}}}
 subport for now, although I am not sure that the current MacPorts version
 from ~1.5 years ago supports it.

-- 
Ticket URL: <https://trac.macports.org/ticket/59854>
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