core: python 3.12 support

Fixes #22

src/coccigrep.py

@@ -15,9 +15,9 @@
 # 02110-1301, USA.
 
 try:
-    from configparser import SafeConfigParser
+    from configparser import ConfigParser as PyConfigParser
 except Exception:
-    from ConfigParser import SafeConfigParser
+    from ConfigParser import SafeConfigParser as PyConfigParser
 from os import unlink, path, listdir, getcwd
 from string import Template
 from subprocess import Popen, PIPE, STDOUT
@@ -88,16 +88,16 @@ class CocciRunException(CocciException):
     (getcwd(), '.%s'))))
 
 
-class CocciGrepConfig(SafeConfigParser):
+class CocciGrepConfig(PyConfigParser):
     """
     Configuration handling class
 
     This class parses configuration and can be used to access to
     configuration item via get operations. CocciGrepConfig is derived
-    from SafeConfigParser
+    from ConfigParser
     """
     def __init__(self):
-        SafeConfigParser.__init__(self)
+        PyConfigParser.__init__(self)
         self._load_config()
 
     def _load_config(self):