[roll third_party/pigweed] pw_toolchain: Exclude googletest from static analysis

Exclude googletest from static analysis because it fails
many clang-tidy checks.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/173482

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 6009bb6a3b7fa0b..5e54acdf5551998
Roller-URL: https://ci.chromium.org/b/8767955365532445473
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Id0591a6d49f0258394b2bdeb2214482e8412afa6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/174946
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 6009bb6..5e54acd 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 6009bb6a3b7fa0b5513e66b23d22c6100a2e7d9a
+Subproject commit 5e54acdf5551998050518d225d0ea573f63366b9