Tags: flashlight/sequence

Update gtest tag to point to v1.13.0 (#13)

Summary:
See title.

Pull Request resolved: #13

Test Plan: CI

Reviewed By: EntilZha

Differential Revision: D46597416

Pulled By: jacobkahn

fbshipit-source-id: 334a5b3ffe6d68fc2eceed2e90c326509730066c