[roll] Roll third_party/googletest README.md: Remove outdated notes about continuous integration and
documentation

PiperOrigin-RevId: 651816538
Original-Revision: 4b21f1abddaf7d28388d7430bab69a81eccb1909

Roller-URL: https://ci.chromium.org/b/8742597978349518273
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ib63a1f393286c859097ce7915a8e8b31f88bd15c
Reviewed-on: https://fuchsia-review.googlesource.com/c/drivers/graphics/gpu/+/1080842
Commit-Queue: GI Roller <global-integration-roller@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/third_party/googletest b/third_party/googletest
index b4aaf97..4b21f1a 160000
--- a/third_party/googletest
+++ b/third_party/googletest
@@ -1 +1 @@
-Subproject commit b4aaf97d8f7eaffab79aa15e10a91b331b941fe2
+Subproject commit 4b21f1abddaf7d28388d7430bab69a81eccb1909