Update absl. This brings us VLOG #4206

Job	Run time
KytheVerification	0s
ClangTidy	6m 17s
KytheXrefs	0s
x86_64 test	6m 16s
MacOsBuild	11m 2s
arm64 test	6m 9s
MacOsBuildDevTools	14m 45s
x86_64 test-nortti	6m 19s
PrepareVSPlugin	2m 13s
x86_64 test-c++20	6m 21s
VerifyFormatting	1m 43s
WindowsBuild	15m 13s
x86_64 test-c++23	6m 19s
x86_64 smoke-test	12m 17s
arm64 smoke-test	13m 11s
x86_64 asan	11m 13s
x86_64 asan-clang	10m 1s
x86_64 compile	8m 10s
arm64 compile	5m 37s
x86_64 compile-clang	5m 0s
arm64 compile-clang	5m 38s
x86_64 compile-static	5m 20s
arm64 compile-static	5m 39s
x86_64 compile-static-clang	5m 7s
arm64 compile-static-clang	5m 44s
x86_64 coverage	19m 0s
x86_64 clean	7m 22s
arm64 clean	7m 7s
Build and deploy GitHub pages	9s
📦 Release	0s
	3h 29m 12s

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