[READY] Update Abseil to latest LTS #718

Job	Run time
C++ Lint	6m 22s
C++ Lint	6m 22s
ubuntu-20.04 - C++ Benchmark	2m 6s
ubuntu-20.04 - C++ Benchmark	2m 6s
Windows MSVC 17 x64 - C++ Benchmark	3m 25s
Windows MSVC 17 x64 - C++ Benchmark	3m 25s
ubuntu-20.04 - test run	26m 14s
ubuntu-20.04 - test run	26m 14s
Windows MSVC 17 x64 - test run	37m 45s
Windows MSVC 17 x64 - test run	37m 45s
macos-12 - C++ Benchmark	2m 57s
macos-12 - C++ Benchmark	2m 57s
Windows MSVC 17 x86 - test run	35m 46s
Windows MSVC 17 x86 - test run	35m 46s
macos-12 - test run	38m 31s
macos-12 - test run	31m 31s
Windows MSVC 16 x64 - test run	39m 6s
Windows MSVC 16 x64 - test run	35m 16s
ubuntu-20.04 - with Clang compiler - test run	25m 39s
ubuntu-20.04 - with Clang compiler - test run	25m 39s
ubuntu-20.04 - without libclang completer - test run	26m 2s
ubuntu-20.04 - without libclang completer - test run	26m 2s
	7h 56m 56s

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