[roll third_party/pigweed] pw_unit_test: Disable non-const global variable warnings for TestInfo

TestInfo objects are not const in order to support the
PW_UNIT_TEST_LINK_FILE_CONTAINING_TEST() macro. Disable clang-tidy
warnings related to non-const globals.

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/109719

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 7f71689e5613592..cf4afce96fe9c62
Roller-URL: https://ci.chromium.org/b/8803190151407412161
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I93c834f2fe946cd8c321f3ba61ba1a0dc99c1eb9
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/110141
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 7f71689..cf4afce 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 7f71689e56135923e437cc245c7a31cbcb8510b6
+Subproject commit cf4afce96fe9c62ba37c1f81203bfc0f73b51614