Drop python 3.8

Signed-off-by: tangy5 <[email protected]>

Author: tangy5

setup.cfg

@@ -27,7 +27,7 @@ project_urls =
     Source Code=https://github.com/Project-MONAI/MONAILabel
 
 [options]
-python_requires = >= 3.8
+python_requires = >= 3.9
 # for compiling and develop setup only
 # no need to specify the versions so that we could
 # compile for multiple targeted versions.