Bump third_party/perfetto/repo from `b9aca8f` to `bea7f2f` #2325

Job	Run time
Build on Darwin (clang, python_lib, simulated)	6m 52s
Build on Linux (fake, gcc_release, clang, simulated)	1m 56s
Build on Linux (coverage)	16m 27s
Build on Linux (gcc_debug)	2m 25s
Build on Linux (python_lib)	2m 28s
Build on Linux (python lighting-app)	6m 0s
	36m 8s

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