Update filecmp from CPython 3.12.2

Lib/filecmp.py

@@ -10,10 +10,7 @@ Functions:
 
 """
 
-try:
-    import os
-except ImportError:
-    import _dummy_os as os
+import os
 import stat
 from itertools import filterfalse
 from types import GenericAlias
@@ -160,17 +157,17 @@ class dircmp:
             a_path = os.path.join(self.left, x)
             b_path = os.path.join(self.right, x)
 
-            ok = 1
+            ok = True
             try:
                 a_stat = os.stat(a_path)
             except OSError:
                 # print('Can\'t stat', a_path, ':', why.args[1])
-                ok = 0
+                ok = False
             try:
                 b_stat = os.stat(b_path)
             except OSError:
                 # print('Can\'t stat', b_path, ':', why.args[1])
-                ok = 0
+                ok = False
 
             if ok:
                 a_type = stat.S_IFMT(a_stat.st_mode)
@@ -245,7 +242,7 @@ class dircmp:
 
     methodmap = dict(subdirs=phase4,
                      same_files=phase3, diff_files=phase3, funny_files=phase3,
-                     common_dirs = phase2, common_files=phase2, common_funny=phase2,
+                     common_dirs=phase2, common_files=phase2, common_funny=phase2,
                      common=phase1, left_only=phase1, right_only=phase1,
                      left_list=phase0, right_list=phase0)