roll: third_party/pigweed 2 commits

6503ea83db78a47 pw_symbolizer: Get llvm-symbolizer path from Bazel
08c4ea4df5a3d2b docs: Update changelog

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 542cb9290ee366a..6503ea83db78a47
Roller-URL: https://ci.chromium.org/b/8741300734219905217
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I2e2526467989873445d67326988c54ad71bc68b3
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/226311
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 542cb92..6503ea8 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 542cb9290ee366a8562a1fde94f537768e64b034
+Subproject commit 6503ea83db78a4751ae45b4f21419b6edf63d4ae