change MIN_boost_version

ubuntu version 20.04 is no longer supported.
The minimum boost version used for freecad is now 1.74 (ubuntu 22.04) https://launchpad.net/ubuntu/jammy/+package/libboost-system-dev

src/Mod/CAM/App/Area.cpp

@@ -28,7 +28,7 @@
 #ifndef _PreComp_
 #include <cfloat>
 
-#include <boost_geometry.hpp>
+#include <boost/geometry.hpp>
 #include <boost/geometry/geometries/register/point.hpp>
 #include <boost/geometry/index/rtree.hpp>
 #include <boost/range/adaptor/transformed.hpp>

src/Mod/CAM/libarea/PythonStuff.cpp

@@ -32,10 +32,8 @@
 
 #define BOOST_BIND_GLOBAL_PLACEHOLDERS
 
-// #include <boost/progress.hpp>
-// #include <boost/timer.hpp>
 #include <boost/foreach.hpp>
-#include <boost_python.hpp>
+#include <boost/python.hpp>
 #include <boost/python/module.hpp>
 #include <boost/python/class.hpp>
 #include <boost/python/wrapper.hpp>