tests: fix test case to not import distutils on python 3.12

Testing the correctness of the `modules: ` kwarg can be done with other
guaranteed stdlib modules that are even more guaranteed since they
didn't get deprecated for removal.

test cases/python/5 modules kwarg/meson.build

@@ -1,7 +1,7 @@
 project('python kwarg')
 
 py = import('python')
-prog_python = py.find_installation('python3', modules : ['distutils'])
+prog_python = py.find_installation('python3', modules : ['os', 'sys', 're'])
 assert(prog_python.found() == true, 'python not found when should be')
 prog_python = py.find_installation('python3', modules : ['thisbetternotexistmod'], required : false)
 assert(prog_python.found() == false, 'python not found but reported as found')