Fix importlib.resources constraints

The python version was not being constrained correctly, leading
to using the python > 3.8 imports for python 3.8

Author: xylar

mache/machine_info.py

@@ -6,7 +6,7 @@
 
 from lxml import etree
 
-if TYPE_CHECKING or sys.version_info > (3, 8, 0):
+if TYPE_CHECKING or sys.version_info >= (3, 9, 0):
     from importlib import resources as importlib_resources
 else:
     # python <= 3.8

mache/spack/__init__.py

@@ -5,7 +5,7 @@
 
 from jinja2 import Template
 
-if TYPE_CHECKING or sys.version_info > (3, 8, 0):
+if TYPE_CHECKING or sys.version_info >= (3, 9, 0):
     from importlib import resources as importlib_resources
 else:
     # python <= 3.8