Roll external/abseil_cpp/ 52fad5aa0..ac267be5c (14 commits)

abseil/abseil-cpp@52fad5a...ac267be

Created with:
  roll-dep external/abseil_cpp

Author: GitHub Actions[bot]

DEPS

@@ -3,7 +3,7 @@ use_relative_paths = True
 vars = {
   'github': 'https://github.com',
 
-  'abseil_revision': '52fad5aa026b6202dd8dabb5723f2ee3f604048f',
+  'abseil_revision': 'ac267be5cf9b722a89c0293ccaa7df1ecdb3a446',
 
   'effcee_revision': '2c97e5689ed8d7ab6ae5820f884f03a601ae124b',