[samples] Update third_party/googletest

Forward third_party/googletest/src submodule dependency to reference
latest export used by Chromium project. This update improves Fuchsia
target support when built into test packages.

Bug: 87492
Test: scripts/setup-and-test.sh
Change-Id: I0ce6956cdb7841702caa45f755615d260159ab4d
Reviewed-on: https://fuchsia-review.googlesource.com/c/samples/+/647244
Reviewed-by: Wayne Piekarski <waynepie@google.com>
Commit-Queue: Dave Smith <smithdave@google.com>
diff --git a/third_party/googletest/src b/third_party/googletest/src
index ae8d1fc..5bcd8e3 160000
--- a/third_party/googletest/src
+++ b/third_party/googletest/src
@@ -1 +1 @@
-Subproject commit ae8d1fc81b1469905b3d0fa6f8a077f58fc4b250
+Subproject commit 5bcd8e3bb929714e031a542d303f818e5a5af45d