Update dependency com_google_googletest
Update dependency com_google_googletest

To version 18f8200e3079b0e54fa00cb7ac55d4c39dcf6da6.

PiperOrigin-RevId: 348060823
Change-Id: I28fbe97b1cf25b1ec6b3f6d0df70db71a87e5325

google/asylo,google/asylo,google/asylo,google/asylo,google/asylo,google/asylo