Bump third_party/googletest from `455fcb7` to `e4fdb87` #705

Job	Run time
build_using_compiler_in_environment (clang, clang++)	1m 30s
build_using_compiler_in_environment (gcc, g++)	1m 32s
coverage	1m 7s
install	1m 19s
linters (cppcheck)	1m 59s
linters (clang-tidy)	2m 5s
test (clang-sanitize-address)	1m 56s
test (clang-sanitize-undefined)	1m 52s
	13m 20s

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