Bump third_party/googletest from `455fcb7` to `e1a38bc` #706

Job	Run time
build_using_compiler_in_environment (clang, clang++)	1m 28s
install	1m 34s
build_using_compiler_in_environment (gcc, g++)	1m 27s
linters (cppcheck)	2m 3s
linters (clang-tidy)	2m 7s
test (clang-sanitize-address)	1m 53s
test (clang-sanitize-undefined)	1m 53s
coverage	1m 5s
	13m 30s

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