Bump Gtest to 1.16.0 #14680

Job	Run time
Ubuntu Build release	15m 15s
Ubuntu Build debug	56s
Ubuntu Build asan	1m 35s
Ubuntu Build msan	3m 15s
Ubuntu Build tsan	1m 8s
Ubuntu Build scalar	1m 5s
Ubuntu Build lowprecision	14m 46s
Ubuntu Build coverage	42s
Ubuntu Build release-nojpeg	1m 3s
Ubuntu Build release-lcms2	1m 8s
Ubuntu Build release-system-lcms2	1m 18s
Ubuntu Build release:arm64	16m 31s
Ubuntu Build release:arm64-lowprecision	16m 3s
Ubuntu Build release:minimal	1m 4s
Ubuntu Build release:gcc	59s
Ubuntu Build release:gcc-old	1m 4s
Ubuntu Build release:gcc-old-old	1m 0s
Ubuntu Build release:clang-old	3m 14s
Ubuntu Build release:clang-old-old	1m 7s
MacOS Build release:osx	1m 36s
MacOS Build release:osx-15	1m 27s
	1h 26m 16s

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