Update dependency abseil-py to v2 #2934

Job	Run time
Test (7.0.0, ubuntu-latest, gcc)	2m 16s
Test (7.0.0, ubuntu-latest, clang)	22m 59s
Test (7.0.0, macos-latest, clang)	6m 31s
Test (7.0.0, windows-latest, msvc)	6h 0m 1s
Test (7.4.1, ubuntu-latest, gcc)	2m 10s
Test (7.4.1, ubuntu-latest, clang)	17m 33s
Test (7.4.1, macos-latest, clang)	7m 24s
Test (7.4.1, windows-latest, msvc)	17m 12s
Test (8.0.0, ubuntu-latest, gcc)	2m 11s
Test (8.0.0, ubuntu-latest, clang)	2m 14s
Test (8.0.0, macos-latest, clang)	7m 30s
Test (8.0.0, windows-latest, msvc)	27m 29s
Test (latest, ubuntu-latest, gcc)	15m 15s
Test (latest, ubuntu-latest, clang)	2m 15s
Test (latest, macos-latest, clang)	15m 47s
Test (latest, windows-latest, msvc)	30m 40s
	8h 59m 27s

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