Roll external/abseil_cpp/ cd1253229..c34b14912 (6 commits) (KhronosGroup#6800)

abseil/abseil-cpp@cd12532...c34b149

Created with:
  roll-dep external/abseil_cpp

Co-authored-by: GitHub Actions[bot] <>

Author: github-actions[bot]

DEPS

@@ -3,7 +3,7 @@ use_relative_paths = True
 vars = {
   'github': 'https://github.com',
 
-  'abseil_revision': 'cd1253229e7d0450be1e35fb12c0bce06c87ba48',
+  'abseil_revision': 'c34b1491291f7673fd758ea3aa08517231497b97',
 
   'effcee_revision': '910ed15722d5d05c9d71ecf36c1a22243cb79b02',