[MacPorts] #68733: doxygen-devel does not respect python setting, picking a newer python if available

[MacPorts]

#68733: doxygen-devel does not respect python setting, picking a newer python if
available
--------------------------+---------------------------
 Reporter:  barracuda156  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:                |       Port:  doxygen-devel
--------------------------+---------------------------
 ```
 [ 38%] Generating ../generated_src/fortrancode.l.h
 cd
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_textproc_doxygen-devel/doxygen-
 devel/work/doxygen-1.9.8/src && /opt/local/bin/python3.12
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_textproc_doxygen-devel/doxygen-
 devel/work/doxygen-1.9.8/src/scan_states.py
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_textproc_doxygen-devel/doxygen-
 devel/work/doxygen-1.9.8/generated_src/fortrancode.l >
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_textproc_doxygen-devel/doxygen-
 devel/work/doxygen-1.9.8/generated_src/fortrancode.l.h
 ```

-- 
Ticket URL: <https://trac.macports.org/ticket/68733>
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