Merge pull request #3822 from mehrdada/update-benchmark-submodule

Update google/benchmark submodule to v1.2

third_party/benchmark

@@ -1 +1 @@
-Subproject commit 360e66c1c4777c99402cf8cd535aa510fee16573
+Subproject commit 5b7683f49e1e9223cf9927b24f6fd3d6bd82e3f8